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Test Code CIT PLT Platelet Clumper

Important Note

This test is part of the "CBC+DIFF for platelet clumper" order set, not orderable on its own.

Clinical System Name

CBC + Diff for Platelet Clumper


platelet clumper

plt clumper

EDTA platelet clumper


For known suspected EDTA platelet clumpers

Sample Requirements

Specimen: Whole Blood

Container(s):  Lt. Blue/citrate

Preferred Vol: 1x 1.8 mL light blue top tube

Minimum Vol: 1x 1.8 mL light blue top tube


Notes: Must be drawn in addition to EDTA specimen CBC or CBC DIFF order

Processing Instructions

Reject due to:  Insufficient Quantity, Wrong Sample Collection, Clotted Sample

Spin: N

Aliquot: N

Temp: RT

Storage location:  Deliver to Core Lab Hematology bench with CBC/CBC DIFF EDTA sample.


Off-site collection: Store whole blood at room teperature and transport to Children's Lab immediately.  Samples > 24 hours old may be rejected.



Specimen Type Temperature Time
 Whole blood RT

24 hrs

 Whole blood 2-8oC

 48 hrs

Whole blood -20oC or -70oC




STAT Performed TAT
Y 24/7 1 H


Performing Laboratory

Seattle Children's Laboratory    


Department:  Core Hematology

Phone Number: 206-987-2561




Method:  Sysmex XN-3000 & XN-1000: RF/DC detection method, Flow cytometry with semiconductive laser, photometrically, SLS-hemoglobing method, hydrodynamic focusing

Analytical Volume:  0.25 mL  whole blood


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