NewMobile X-Ray Technologist- Baltimore Browyn Sugar Virtual SolutionsMobile X-Ray Technologist- BaltimoreBaltimore, MarylandYou'll be responsible for performing and processing X-Rays using portable digital radiography equipment, performing EKGs, and maintaining regular communication with dispatch, management, and clients. Perform and process X-Rays using portable digital (DR) or computed (CR) radiography equipment and submit/transmit them to a Radiologist for interpretation.
NewMobile X-Ray Technologist- Bowie Browyn Sugar Virtual SolutionsMobile X-Ray Technologist- BowieBowie, MarylandYou'll be responsible for performing and processing X-Rays using portable digital radiography equipment, performing EKGs, and maintaining regular communication with dispatch, management, and clients. Perform and process X-Rays using portable digital (DR) or computed (CR) radiography equipment and submit/transmit them to a Radiologist for interpretation.
CT Technologist - Certified- Inpatient Varied 7am -3:30, 3:00-11:30, 11pm-7:30am Anne Arundel Medical CenterCT Technologist - Certified- Inpatient Varied 7am -3:30, 3:00-11:30, 11pm-7:30amAnnapolis, MD$40–$60 / hourParticipates in orientation of new personnel and development on in-services and cross training programs consistent with performance objectives and training needs of employees. Performs daily quality assurance testing on CT unit and emergency equipment and maintains appropriate records as required by department procedure.
CT Technologist - Certified- M-F, Part-time 48 hours pp/Evenings/Nights rotating weekends Anne Arundel Medical CenterCT Technologist - Certified- M-F, Part-time 48 hours pp/Evenings/Nights rotating weekendsAnnapolis, MD$40–$60 / hourParticipates in orientation of new personnel and development on in-services and cross training programs consistent with performance objectives and training needs of employees. Performs daily quality assurance testing on CT unit and emergency equipment and maintains appropriate records as required by department procedure.
MRI Technologist - Weekend Johns Hopkins HospitalMRI Technologist - WeekendColumbia, MDWe are committed to creating a welcoming and inclusive environment, where we embrace and celebrate our differences, where all employees feel valued, contribute to our mission of serving the community, and engage in equitable healthcare delivery and workforce practices. As a member of Johns Hopkins Medicine, Johns Hopkins Howard County Medical Center is a 266-bed acute care facility that has been serving the community for nearly 40 years.
CT Technologist - Weekend Johns Hopkins HospitalCT Technologist - WeekendColumbia, MDWe are committed to creating a welcoming and inclusive environment, where we embrace and celebrate our differences, where all employees feel valued, contribute to our mission of serving the community, and engage in equitable healthcare delivery and workforce practices. As a member of Johns Hopkins Medicine, Johns Hopkins Howard County Medical Center is a 266-bed acute care facility that has been serving the community for nearly 40 years.
Sonography Tech AscensionSonography TechBaltimore, Maryland$45.83–$63.88 / hourPer diemHow you'll make an impact in this role: Perform sophisticated diagnostic ultrasound procedures, skillfully maneuvering transducers to capture high-definition images of anatomy and pathology that guide accurate patient diagnoses. Our legitimate email communications will always come from an @ascension.org email address; do not trust other domains, and an official offer will only be extended to candidates who have completed a job application through our authorized applicant tracking system.
CT Technologist Veracity Software IncCT TechnologistSilver Spring, MDYes/No): Describe your CT imaging experience, including the CT scanner models, trauma/emergency imaging, contrast studies, and patient populations you have supported: Motivation / Reason for Relocation (if not local): Motivation / Reason for interest in this position: Contact Number: Email ID: LinkedIn Profile URL: Full Address (Street, City, State, ZIP Code): Notice Period / Earliest Available Start Date: Current Work Authorization Status: Expected Hourly Rate on W2: Are you able to relocate on your own expenses and work onsite in Silver Spring, Maryland for the full contract duration? Full Name: Highest Education – Institution & Completion Year: Current Certifications (ARRT (RT)(CT), BLS, Maryland State License, Other – Include Expiration Dates): Total Years of CT Technologist Experience: Total Years of Hospital CT Imaging Experience: Do you have a minimum of 3 years of CT Technologist experience?
CV Interventional Technologist III, RT(R) or RCIS (Cath Lab) University of Maryland Baltimore Washington Medical CenterCV Interventional Technologist III, RT(R) or RCIS (Cath Lab)Baltimore, MD$42.64–$64.69 / hourOperates hemodynamic monitors to include cardiac output, blood gas analyzers, oxygen consumption analyzers, patient assessment machines, such as blood pressure cuffs and pulse oximeters to measure the various vital organ outputs/functioning during the procedure. Uses EKG equipment, intravenous pumps, blood pressure equipment and related routine equipment to maintain continuous patient care and/or perform life-saving techniques (CPR) to patients undergoing cardiovascular procedures.
Echocardiography Technologist OP AscensionEchocardiography Technologist OPBaltimore, Maryland$45.83–$63.88 / hourFull timeRadiologic Technologist specializing in Radiography credentialed from the American Registry of Radiologic Technologists (ARRT) obtained within 6 Months (180 days) of hire date or job transfer date. One or more of the following required: Cardiac Sonographer credentialed from the American Registry for Diagnostic Medical Sonography (ARDMS) obtained within 6 Months (180 days) of hire date or job transfer.
Sonography Tech Ascension Health AllianceSonography TechBaltimore, MD$45.83–$63.88 / hourOptimize image quality and data integrity within the PACS system, ensuring that every scan-complete with precise markers and history-supports a seamless transition from exam to interpretation. One or more of the following required: Radiologic Technologist specializing in Sonography credentialed from the American Registry of Radiologic Technologists (ARRT) obtained prior to hire date or job transfer date.
CT Technologist Supplemental Tier A Greater Baltimore Medical CenterCT Technologist Supplemental Tier ATowson, MD$27.32–$44.80 / hourPerforms a variety of related clerical tasks, such as retrieving radiographic film records, filing films, answering phones, relaying messages, registering and scheduling patients, and so forth. Principal Duties and Responsibilities: Prepares patient for examination and sets up and manipulates the use of all computed tomography, data processing, and ancillary equipment required for computed tomography procedures.
CT Technologist Greater Baltimore Medical CenterCT TechnologistTowson, MD$33.06–$54.22 / hourPerforms a variety of related clerical tasks, such as retrieving radiographic film records, filing films, answering phones, relaying messages, registering and scheduling patients, and so forth. Principal Duties and Responsibilities: Prepares patient for examination and sets up and manipulates the use of all computed tomography, data processing, and ancillary equipment required for computed tomography procedures.
CT Technologist Trainee (ARRT Required) RadNet IncCT Technologist Trainee (ARRT Required)MD$40–$55 / hourThe individual in this role must successfully complete all required training and obtain ARRT (CT) certification and/or State licensure (as applicable by state regulations) within the designated timeframe in order to transition into a CT Technologist position. Observes and assists with administering contrast media (only after obtaining venipuncture certification and under direct supervision, if applicable).
Lead Mammography Technologist RadNet IncLead Mammography TechnologistLutherville, MDWhen you join us as a Lead Mammography Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Works directly with the Training Mammography Director to ensure that, Mammography Technologists are onboarded and trained appropriately, and MQSA and ACR requirements, including quality assurance, clinical image quality, and quality control, are met throughout the region.
CT Technologist Trainee RadNet IncCT Technologist TraineeBethesda, MD$40–$55 / hourThe individual in this role must successfully complete all required training and obtain ARRT (CT) certification and/or State licensure (as applicable by state regulations) within the designated timeframe in order to transition into a CT Technologist position. Observes and assists with administering contrast media (only after obtaining venipuncture certification and under direct supervision, if applicable).
Echocardiography Technologist OP Ascension Health AllianceEchocardiography Technologist OPBaltimore, MD$45.83–$63.88 / hourRadiologic Technologist specializing in Radiography credentialed from the American Registry of Radiologic Technologists (ARRT) obtained within 6 Months (180 days) of hire date or job transfer date. One or more of the following required: Cardiac Sonographer credentialed from the American Registry for Diagnostic Medical Sonography (ARDMS) obtained within 6 Months (180 days) of hire date or job transfer.
Vascular Technologist Vascular Surgery Ascension Health AllianceVascular Technologist Vascular SurgeryBaltimore, MD$40.49–$56.43 / hourEducation: • High School diploma equivalency with 2 years of cumulative experience OR Associates degree/Technical degree OR 4 years of applicable cumulative job specific experience required. • Radiologic Technologist specializing in Radiography credentialed from the American Registry of Radiologic Technologists (ARRT) obtained prior to hire date or job transfer date.
MRI Technologist RadNet IncMRI TechnologistColumbia, MD$37–$45 / hourWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
Mammography Technologist RadNet IncMammography TechnologistMDWhen you join us as a Mammography Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use compression, exposure modes, filter, KvP, Mas, grid selection, focal spot size, AEC selection, photo cell selection and other adjustments and factors on the equipment in order to produce high quality images.
MRI Technologist Float RadNet IncMRI Technologist FloatCatonsville, MD$37–$45 / hourWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
CT Technologist RadNet IncCT TechnologistMD$36–$48 / hourWhen you join RadNet as a CT Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. With dynamic cross-training and advancement opportunities in a team-focused environment, the core of RadNet's success is its people with the commitment to a better healthcare experience.
CT Technologist Trainee (ARRT Required) Community Radiology AssociatesCT Technologist Trainee (ARRT Required)Silver Spring, Maryland$40–$55 / hourFull timeThe individual in this role must successfully complete all required training and obtain ARRT (CT) certification and/or State licensure (as applicable by state regulations) within the designated timeframe in order to transition into a CT Technologist position. Observes and assists with administering contrast media (only after obtaining venipuncture certification and under direct supervision, if applicable).
CT Scan Technologist II-Certified - FT- Night 7pm-730a Anne Arundel Medical CenterCT Scan Technologist II-Certified - FT- Night 7pm-730aAnnapolis, MD$40–$60 / hourParticipates in orientation of new personnel and development on in-services and cross training programs consistent with performance objectives and training needs of employees. A minimum of one year as a radiologic technologist and either one year CT experience or the successful completion of in-house CT cross-training program.
Radiographer University of Maryland Baltimore Washington Medical CenterRadiographerTowson, MD$31.57–$44.50 / hourLocated in Largo in the heart of Prince George's County, our new state-of-the-art regional medical center (UM Capital Region Medical Center) will provide improved access to primary and ambulatory care services, and serve as a tertiary care center for critically ill patients. Follows communication protocols to both internal and external customers, including introducing him/herself with job title and experience, asking open ended questions, such as "How may I be of help to you?" using the customer's name as soon as it is learned.
Angio Tech-Full-time-Day Shift Trinity HealthAngio Tech-Full-time-Day ShiftSilver Spring, MD$35.41–$53.12 / yearn Our mission and core values are what drive each member of Trinity Health to support each other, communicate openly and respectfully while embracing a culture that nurtures a healing, safe environment for all.\u202f\u202f \n* Referral Rewards Program \n \nHoly Cross Health is a Catholic, not-for-profit health system that serves the two most populous counties in Maryland, Montgomery and Prince George's, with a commitment to being the most trusted provider of health-care services in the area. \n Our mission and core values are what drive each member of Trinity Health to support each other, communicate openly and respectfully while embracing a culture that nurtures a healing, safe environment for all.\u202f\u202f \n Referral Rewards Program \n \nPosition Highlights:\n\n Work/Life balance with flexible schedules.\u202f \n Free onsite parking.\u202f
Radiography Tech AscensionRadiography TechBaltimore, Maryland$33.68–$46.96 / hourPart timeHow you'll make an impact in this role: Create high-fidelity diagnostic images by masterfully positioning patients and selecting precise technical parameters to ensure physicians have the clearest possible data for accurate diagnosis. Education: High School diploma equivalency with 2 years of cumulative experience OR Associate's degree/Technical degree OR 4 years of applicable cumulative job specific experience required.
Diagnostic Technologist MedStar HealthDiagnostic TechnologistBaltimore, MD$29.73–$48.63 / hourJoin one of the largest healthcare systems in the Baltimore-Washington metro region, also recognized as one of the "Healthiest Maryland Businesses". The Diagnostic Technologist will make a difference on our team by performing diagnostic medical radiographic and fluoroscopic procedures through interpretation.
Mammography Technologist Community Radiology AssociatesMammography TechnologistBethesda, Maryland$36–$50 / hourFull timeWhen you join us as a Mammography Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use compression, exposure modes, filter, KvP, Mas, grid selection, focal spot size, AEC selection, photo cell selection and other adjustments and factors on the equipment in order to produce high quality images.
MRI Technologist Community Radiology AssociatesMRI TechnologistOlney, Maryland$40–$55 / hourPer diemWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
MRI Technologist Float Community Radiology AssociatesMRI Technologist FloatRockville, Maryland$40–$55 / hourWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
CT Technologist (4/10s) Community Radiology AssociatesCT Technologist (4/10s)Rockville, Maryland$40–$55 / hourFull timeWhen you join RadNet as a CT Technologist , you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators achieve the best clinical outcomes. With dynamic cross-training and advancement opportunities in a team-focused environment, the core of RadNet’s success is its people with the commitment to a better healthcare experience.
Diagnostic Technologist MedStar Health Research InstituteDiagnostic TechnologistBaltimore, MD$29.73–$48.63 / hourJoin one of the largest healthcare systems in the Baltimore-Washington metro region, also recognized as one of the "Healthiest Maryland Businesses". The Diagnostic Technologist will make a difference on our team by performing diagnostic medical radiographic and fluoroscopic procedures through interpretation.
X-ray Technologist Patient FirstX-ray TechnologistBaltimore, Maryland$32–$37 / hourLabeling images and sleeves correctly when making these copies;Understanding the x-ray and processing equipment so that it will be used correctly;Using and understanding the bell system;Filing and maintaining all x-ray paperwork;Ensuring the safety of patients when using wheelchairs, stools, and other equipment;Understanding and using the following: Daily Log, X-Ray Listing, Copy Listing, and X-Ray Status Screen;Understanding and using the automated medical records system;Cleaning work area, biological cleanup in accordance with OSHA guidelines and other maintenance assignments as directed;Receiving, moving, and restocking ordered supplies;Adhering to established Patient First policies and procedures;Addressing physician and nurse requests with respect and in a timely manner;Completing the tasks listed on the checklists for the x-ray area and treatment area;Attending training classes and staff meetings as scheduled;Being available as needed, breaks and mealtimes may be interrupted at any time for patient care and to maintain center operations;Responsible for the operating, using and maintaining medical and office equipment as trained. Minimum education and professional requirements include, but are not limited to, the following: Employee must be at least 18 years of age;High school graduate or equivalent;Keyboarding experience required;Excellent verbal and written communication skills;One year of clerical experience preferred;One year of clinical experience preferred;Registered with the American Registry of Radiologic Technologists (ARRT);Licensed to practice as Radiologic Technologist by the Maryland Board of Physicians.
Radiography Tech Ascension Health AllianceRadiography TechBaltimore, MD$33.68–$46.96 / hourOne or more of the following required: Radiologic Technologist specializing in Radiography credentialed from the American Registry of Radiologic Technologists (ARRT) obtained prior to hire date or job transfer date required. Deliver diagnostic clarity by expertly positioning patients and selecting precise technical parameters, ensuring physicians receive the high-quality images necessary for accurate medical diagnoses.
CT Technologist - PRN Johns Hopkins HospitalCT Technologist - PRNColumbia, MDJHHS is an academically based health system consisting of: The Johns Hopkins Hospital, Johns Hopkins Bayview Medical Center, Johns Hopkins Howard County Medical Center, Suburban Hospital, Sibley Memorial Hospital, The Johns Hopkins All Children's Health System, Johns Hopkins Community Physicians, The Johns Hopkins Medical Services Corporation and Johns Hopkins Medical Management Corporation. We are committed to creating a welcoming and inclusive environment, where we embrace and celebrate our differences, where all employees feel valued, contribute to our mission of serving the community, and engage in equitable healthcare delivery and workforce practices.
Mammography Technologist Johns Hopkins HospitalMammography TechnologistBaltimore, MDWe are committed to creating a welcoming and inclusive environment, where we embrace and celebrate our differences, where all employees feel valued, contribute to our mission of serving the community, and engage in equitable healthcare delivery and workforce practices. As a Mammo Tech you will perform mammographic procedures of a routine and difficult nature, participate in scheduling procedures for the Breast Imaging Center and train/evaluate other technologists in performing mammographic procedures.
CT Technologist Trainee (ARRT Required) Advanced RadiologyCT Technologist Trainee (ARRT Required)Owings Mills, Maryland$37–$39 / hourFull timeThe individual in this role must successfully complete all required training and obtain ARRT (CT) certification and/or State licensure (as applicable by state regulations) within the designated timeframe in order to transition into a CT Technologist position. Observes and assists with administering contrast media (only after obtaining venipuncture certification and under direct supervision, if applicable).
Lead Mammography Technologist Advanced RadiologyLead Mammography TechnologistLutherville, Maryland$36–$45 / hourFull timeWhen you join us as a Lead Mammography Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Works directly with the Training Mammography Director to ensure that, Mammography Technologists are onboarded and trained appropriately, and MQSA and ACR requirements, including quality assurance, clinical image quality, and quality control, are met throughout the region.
CT Technologist Johns Hopkins Medical Management CorporationCT TechnologistBaltimore, MD$61–$64 / hourJohns Hopkins Intrastaff is the internal staffing agency for the Johns Hopkins Health System and partner hospitals, providing temporary support to various Johns Hopkins locations. This role ensures efficient patient flow, accurate documentation within EPIC and PACS systems, and the delivery of safe, patient‑centered care.
CT Technologist - Bethesda Imaging Johns Hopkins Medical Management CorporationCT Technologist - Bethesda ImagingBethesda, MD$63–$66 / hourJohns Hopkins Intrastaff is the internal staffing agency for the Johns Hopkins Health System and partner hospitals, providing temporary support to various Johns Hopkins locations. This role ensures efficient patient flow, accurate documentation within EPIC and PACS systems, and the delivery of safe, patient‑centered care.
Multi-Modality Technologist RadNet IncMulti-Modality TechnologistWestminster, MD$34–$41 / hourWhen you join us as a Multimodality Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. With dynamic cross-training and advancement opportunities in a team-focused environment, the core of our success is its people with the commitment to a better healthcare experience.
Nuclear Medicine/PET Technologist RadNet IncNuclear Medicine/PET TechnologistGlen Burnie, MD$40–$50 / hourWhen you join us as a Nuclear Medicine / PET Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. You Will: Perform high quality nuclear medicine and/or positron emission tomography/computed tomography images on patients while providing excellent care.
Multi-Modality Technologist University of Maryland Baltimore Washington Medical CenterMulti-Modality TechnologistLaurel, MD$34.05–$51.10 / hourAssociate degree, Certificate, or advanced degree in radiologic technology, or modalities of employment, from a program accredited by an agency recognized by the US Department of Education (USDE) or Council for Higher Education Accreditation (CHEA). Key Responsibility 5: Actively participates in departmental and organizational performance improvement initiatives and efforts to improve workflows, patient experience and quality.
Mammography Technologist Advanced RadiologyMammography TechnologistTowson, Maryland$36–$45 / hourWhen you join us as a Mammography Technologist, you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use compression, exposure modes, filter, KvP, Mas, grid selection, focal spot size, AEC selection, photo cell selection and other adjustments and factors on the equipment in order to produce high quality images.
CT Technologist Advanced RadiologyCT TechnologistBaltimore, Maryland$36–$48 / hourFull timeWhen you join RadNet as a CT Technologist , you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. With dynamic cross-training and advancement opportunities in a team-focused environment, the core of RadNet’s success is its people with the commitment to a better healthcare experience.
MRI Technologist Advanced RadiologyMRI TechnologistEllicott City, Maryland$37–$45 / hourFull timeWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
MRI Technologist Float Advanced RadiologyMRI Technologist FloatGlen Burnie, Maryland$37–$45 / hourFull timeWhen you join us as an MRI Technologist you will be joining a dedicated team of professionals who deliver quality, value, and access in the 21 st century and align all stakeholders- patients, providers, payors, and regulators to achieve the best clinical outcomes. Understand and use TR, TE, flip angel, slice thickness, acquisitions, field of view and other adjustments and factors on the equipment in order to produce high quality images.
Cath Lab/Ir Technologist (Cvir), Day Shift, Cardiovascular Adventist HealthCareCath Lab/Ir Technologist (Cvir), Day Shift, CardiovascularRockville, MD$37.17–$55.76 / hourNicotine products" include, but are not limited to: cigarettes, cigars, pipes, chewing tobacco, e-cigarettes, vaping products, hookah, and nicotine replacement products (e.g., nicotine gum, nicotine patches, nicotine lozenges, etc.). Those testing positive are given the opportunity to re-apply in 90 days, if they can truthfully attest that they have not used any nicotine products in the past ninety (90) days and successfully pass follow-up testing.
Cath Lab/Ir Technologist (Cvir), Day Shift, Cardiac Cath Lab Adventist HealthCareCath Lab/Ir Technologist (Cvir), Day Shift, Cardiac Cath LabSilver Spring, MD$37.17–$55.76 / hourNicotine products" include, but are not limited to: cigarettes, cigars, pipes, chewing tobacco, e-cigarettes, vaping products, hookah, and nicotine replacement products (e.g., nicotine gum, nicotine patches, nicotine lozenges, etc.). Those testing positive are given the opportunity to re-apply in 90 days, if they can truthfully attest that they have not used any nicotine products in the past ninety (90) days and successfully pass follow-up testing.