Platelet Aggregation Studies
Label Mnemonic: PLTAGG
Epic code: LAB1124
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Hemostasis/Thrombosis
6240 RCP
356-3573
Specimen(s):
Platelets
Minimum:
15 mL blood with platelet count >100,000/mm3 in order to recover a platelet rich plasma with a platelet count >225,000.
Testing Schedule:
To be scheduled and drawn by the Hemostasis/Thrombosis technologist only. Please call 356-3573 to schedule. Scheduled: 8 AM - Noon.
Turn Around Time:
8 hours (upon receipt in laboratory)
Reference Range:
Collagen Aggregation     76-91%      Collagen ATP Release 0.42-2.63 nm
Epinephrine Aggregation  45-91%   Epinephrine ATP Release 0.25-2.22 nm
ADP Aggregation          68-95%           ADP ATP Release 0.14-2.13 nm
Arachidonate Aggregation 74-94%  Arachidonate ATP Release 0.16-1.35 nm
Ristocetin Aggregation   71-100%
Comments:
Must have Hematology Consult approval from pager 4326.

A modified platelet aggregation can be performed for Left Ventricular Assist Device (LVAD) patients.

Aspirin, NSAIDS, antihistamines, and aspirin-like drugs taken within the last seven days may invalidate results.
Methodology:
Optical density changes and chemiluminescence.
CPT Code:
Epinephrine     CPT Code: 85576
ADP             CPT Code: 85576
Collagen        CPT Code: 85576
Arachidonate    CPT Code: 85576
Ristocetin      CPT Code: 85576
Pathologist interpretation:  CPT Code: 85576 -26