Platelet Clumping Protocol

Orderable EAP code:

LAB101509

Billable EAP Codes:

80001814 x 1

CPT Codes:

85049 x 1

Lab Section:

Core Lab

Test Schedule:

24 hours/day

Units:

k/cu mm

Critical Values:

Less than or equal to 10
or
greater than or equal to 1000 k/cu mm.

Specimen Requirements:

BLUE top tube, 3.2% sodium citrate. Tube must be full.

Pediatric Specimen Requirements:

Pediatric BLUE top tube, 3.2% sodium citrate. Tube must be full.

Reference Range:

 Age (yrs)  PLT Count (k/cu mm)
 0 to 2  125 to 600
 2 to 12  150 to 420
 12 to 150  150 to 400

Comments:

The Platelet Clumping Protocol is used to resolve falsely decreased platelet counts (pseudothrombocytopenia) in patients whose platelets clump in the presence of EDTA. The lab will test the citrate tube and the EDTA tube submitted for the CBC or platelet count ordered concurrently. The lab will examine both tubes for the presence of platelet clumps, and report the platelet count accordingly.

Synonyms:

Platelet Clumper, EDTA Clumper, Pseudothrombocytopenia