Platelet Antibody, Direct, Flow Cytometry : 5019


Test Code
PLTABQ or 5019

CPT Codes

Lavender (EDTA). Do not refrigerate or freeze.

If the platelet count is less than 20,000/ccm, submit 7-10 mL of whole blood.
Platelet Count Minimum Volume to Submit
greater than ot equal to 45,000 2 mL
20,000-45,000 5 mL
less than 20,000 10 mL

Transport Container
Transport whole blood.
Pediatric: The minimum volume is platelet count dependent. If possible, submit at least 1 mL EDTA blood.

Transport Temperature

Specimen Stability
Ambient: 6 days; Refrigerated: Unacceptable; Frozen: Unacceptable

Flow Cytometry

Setup Schedule
Sunday - Saturday

Report Available
3-4 days (From receipt at performing laboratory)

This test was developed and its performance characteristics determined by Quest Diagnostics Nichols Institute, San Juan Capistrano. 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. Performance characteristics refer to the analytical performance of the test.

Reference Range
Anti-IgG Negative

Clinical Significance
Thrombocytopenia that is refractory to platelet transfusions may be due to direct platelet antibody. Testing is useful to differentiate immune from nonimmune disorders.

Performing Laboratory
Quest Diagnostics

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.