Platelet Aggregation Studies
Ordering Recommendation
Use to evaluate patients with suspected platelet dysfunction (inherited or acquired). Test includes ristocetin-induced platelet aggregation (RIPA). RIPA is not an initial test in the diagnosis of von Willebrand disease (VWD) and should be ordered in consultation with a coagulation specialist to distinguish between type 2 subtypes in patients diagnosed with VWD. A patient history form is required for testing; refer to Patient History for Platelet Aggregation Studies.
New York DOH Approval Status
Specimen Required
Instructions will be provided by the ARUP Hemostasis/Thrombosis lab upon receipt of Patient History for Platelet Aggregation Studies form.
Specimen collection to be scheduled by the ARUP Hemostasis/Thrombosis lab and performed at the ARUP Family Health Clinic.
Performed by the ARUP Hemostasis/Thrombosis Lab.
CRITICAL ROOM TEMPERATURE.
Specimens not scheduled by the ARUP Hemostasis/Thrombosis lab and not collected by ARUP.
A completed Patient History Form must be submitted and approved prior to scheduling specimen collection; refer to Ordering Recommendation section for Patient History Form link.
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: Unacceptable
Methodology
Qualitative Aggregation
Performed
Tue
Reported
1-2 days
Reference Interval
Available Separately | Components | Reference Interval |
---|---|---|
No | Platelet Aggregation Studies, ADP | Normal |
No | Platelet Aggregation Studies, Collagen | Normal |
No | Platelet Aggregation Studies, AA | Normal |
No | Platelet Aggregation Studies, Ristocetin | Normal |
Interpretive Data
Standard
Note
Hotline History
CPT Codes
85576 x4
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0030001 | Platelet Aggregation Studies, Additional | 21027-8 |
0030005 | Platelet Aggregation Studies, ADP | 24377-4 |
0030020 | Platelet Aggregation Studies, AA | 24381-6 |
0030045 | Platelet Aggregation Studies, Collagen | 24379-0 |
0030255 | Platelet Aggregation Studies, Ristocetin | 24380-8 |
Aliases
- PFT
- Platelet function assay
- RIPA
- Ristocetin Induced Platelet Aggregation