Search our extensive Laboratory Test Directory to find test codes, ordering recommendations, specimen stability information, Test Fact Sheets, and more.
Recommendations when to order or not order the test. May include related or preferred tests.
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
Indicates whether a test has been approved by the New York State Department of Health.
This test is not New York state approved. There are no New York state-approved laboratories available. Submit a Non-Permitted Laboratory Request Form (NPL) to the NYDOH prior to collection of specimen. If NPL is approved by NYDOH, and sample is received at ARUP, testing will be performed.
Specimen Required
Patient PreparationInstructions patient must follow before/during specimen collection.
Instructions will be provided by the ARUP Hemostasis/Thrombosis lab upon receipt of Patient History for Platelet Aggregation Studies form.
CollectSpecimen type to collect. May include collection media, tubes, kits, etc.
Specimen collection to be scheduled by the ARUP Hemostasis/Thrombosis lab and performed at the ARUP Family Health Clinic.
Specimen PreparationInstructions for specimen prep before/after collection and prior to transport.
Performed by the ARUP Hemostasis/Thrombosis Lab.
Storage/Transport TemperaturePreferred temperatures for storage prior to and during shipping to ARUP. See Stability for additional info.
CRITICAL ROOM TEMPERATURE.
Unacceptable ConditionsCommon conditions under which a specimen will be rejected.
Specimens not scheduled by the ARUP Hemostasis/Thrombosis lab and not collected by ARUP.
RemarksAdditional specimen collection, transport, or test submission information.
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.
StabilityAcceptable times/temperatures for specimens. Times include storage and transport time to ARUP.
Expected turnaround time for a result, beginning when ARUP has received the specimen.
1-2 days
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
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
May include disease information, patient result explanation, recommendations, or details of testing.
Compliance Category
Standard
Note
Additional information related to the test.
Hotline History
N/A
CPT Codes
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
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