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Search our extensive Laboratory Test Directory to find test codes, ordering recommendations, specimen stability information, Test Fact Sheets, and more.

Changes and New Tests Explore the most recent updates to our Laboratory Test Directory in one convenient location. Review important information about upcoming or current Hotlines, CPT code changes, new tests, and immediate activations.

Test Resources Find general guidance on ARUP specimen preparation and handling, specimen transportation, test turnaround times, critical alerts, billing practices, patient forms, and more.

Changes and New Tests Explore the most recent updates to our Laboratory Test Directory in one convenient location. Review important information about upcoming or current Hotlines, CPT code changes, new tests, and immediate activations.

CPT Code Updates Find information about our annual and biweekly updates to CPT codes.

Test Resources Find general guidance on ARUP specimen preparation and handling, specimen transportation, test turnaround times, critical alerts, billing practices, patient forms, and more.

Performed/Reported Find information about updates to the Performed schedule and the Reported turnaround time.

ARUP Consult^® Our clinical decision support resource, ARUP Consult, empowers clinicians with robust information, algorithms, and tools for informed patient care decisions.

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Test Resources Find specimen instructions, test turnaround times, patient forms, test codes, and more.

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Comprehensive Diagnostic Solutions Discover the benefits of our testing for each featured test category. Explore highlighted updates, articles, video spotlights, and more.

This section highlights our specialized offerings and is separate from our Laboratory Test Directory.

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For Researchers: Clinical Research Services Our team of experienced project managers is available to assist you in companion diagnostic development, clinical trial studies, academic research, and expert pathology review.

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ARUP Institute for Research and Innovation in Diagnostic and Precision Medicine™ We accelerate the development and adoption of cutting-edge diagnostic and prognostic technologies advancing patient care through groundbreaking science and engineering. The Sherrie Perkins Research and Innovation Collaboration Grant The Sherrie Perkins Research and Innovation Collaboration Grant funds cutting-edge research in laboratory medicine.
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Expert-Led Spotlight Video Series Take your learning to the next level with these short lectures. Videos are typically less than 10 minutes and cover a variety of topics such as test utilization, testing technologies, new test explanations, and more.

Podcast Episodes Stay up to date on trending laboratory medicine topics with our LabMind podcast.

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Upcoming Regional Conferences Join our experts at upcoming educational conferences and ARUP-sponsored events. Program agendas, registration information, event locations, and more can be found here. Request an ARUP Speaker Bring our experts directly to your facility with our diverse educational offerings. Choose from a variety of topics, delivered in person or via webinar.

Access Free Online Resources Enhance your medical laboratory science (MLS) program with our free online resource center. Integrate these curated resources into your curriculum to enrich valuable student-faculty engagement.
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About Us ARUP Laboratories is a national, academic, and nonprofit reference laboratory at the forefront of diagnostic medicine. With more than 40 years of experience supporting clients through unparalleled quality and service, our goal is to continually drive positive change for healthcare systems and their patients.Learn More

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Heparin Cofactor II (Inactive as of 12/01/25)

2007580

Heparin Cofactor II (Inactive as of 12/01/25)

12-01-2025

CPT Codes

The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually.
CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ.
CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.

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