ARUP's Laboratory Test Directory

0030160: Platelet Aggregation Studies

[ image for: Time Sensitive]
Time Sensitive
[ image for: UUHSC Testing Only]
UUHSC Testing Only

Test Mnemonic: PLTAG
Methodology: Aggregation

Performed: Tue

Reported: 1-2 days

Specimen Required:  
Collect: Nine 5 mL lt. blue (sodium citrate) and one 5 mL lavender (EDTA) or pink (K2EDTA).  Hemostasis/Thrombosis laboratory must be called at (801) 583-2787 extension 2151 to schedule testing before sample is drawn.  (Min: Nine 5 mL lt. blue and one 5 mL lavender)  Testing is limited to the University of Utah Health Sciences Center.

Transport: 45 mL whole blood (lt. blue, sodium citrate) and one 5 mL whole blood (lavender, EDTA), at 20-25°C.

Remarks: CRITICAL AMBIENT. Sample must be received within one hour of draw.  Patient must be fasting. Include list of current medications and most recent platelet count. 

Unacceptable Conditions: Samples more than one hour from collection. Samples that have been centrifuged or refrigerated.

Stability: Ambient: 1 hour; Refrigerated: Unacceptable; Frozen: Unacceptable

Reference Interval:
ADP: Normal
Collagen: Normal
Arachidonic: Normal
Ristocetin: Normal

CPT Code(s):
85576 x4