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Test Directory Serotonin Release Assay (SRA), Unfractionated Heparin

Serotonin Release Assay (SRA), Unfractionated Heparin

Test Summary

Any patient with an unexplained fall in the platelet count of >40% during or after cessation of heparin therapy should be suspected of hit-heparin induced thrombocytopenia. This test is a functional assay of the PFU-antibody complex with heparin.

Aliases

Specimen Collection

Special Instructions

N/A

Preferred Specimen

1 mL frozen serum

Minimum Volume

0.4 mL

Instructions

N/A

Patient Preparation

N/A

Storage

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 6 months

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

Received room temperature • Received refrigerated

Order Code

SRAUFH

EPIC (Premier) Code

LAB3187

Includes

N/A

CPT Code

86022

Billing Code

670481

CPT Statement

Methodology

Radiobinding Assay (RBA)

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153

Department

Reference Testing

Reference Range

See Laboratory Report

Setup Schedule / Expected Turnaround Time

Sunday - Friday; Report available: 1 - 2 days