Test Overview
Test Methodology
Optical turbidometric aggregation using a Chronolog Lumi-Aggregometer.
Test Usage
Evaluation of vonWillebrand's disease and Bernard Soulier syndrome.
Reference Range*
Interpretative report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Test Performed
Tuesday, Wednesday, Thursday
Analytic Time
4 hours
Soft Order Code
RIPA
Laboratory
Hematopathology
STAT Availability
Requires scheduling in advance. STAT testing is not available.
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Specimen Requirements
Offsite Collection Instructions
Contact MLabs Client Services Center at 800-862-7284 for information regarding scheduling. The patient must have specimen collected at the CVC blood draw station level 3 or C.S.Mott Children's Hospital and Von Voigtlander Women's Hospital draw station.
Special Handing
<ul><li>DO NOT DRAW PATIENT WITHOUT SPECIAL COAGULATION TECHNOLOGIST PRESENT.
</li><li>DO NOT SEND THROUGH PNEUMATIC TUBE SYSTEM.
</li></ul>
Contraindication
Test is contraindicated in:
<ul><li>Patients with platelet counts less than 140,000/ml. Requires medical director approval.
</li><li>Patients taking medications known to adversely affect platelet function. These drugs, including aspirin and medications containing aspirin, other NSAIDs, anti-depressants and a variety of other drugs need to be held for 10 days prior to the scheduled test.
</li><li>Children under 2 years of age.
</li></ul>
Normal Volume
4 full 2.8 mL 3.2% sodium citrate blue top Vacutainer® tubes or 1 EDTA K2 lavender top Vacutainer® tube
Minimum Volume
4 full 2.8 mL 3.2% sodium citrate blue top Vacutainer® tubes or 1 EDTA K2 lavender top Vacutainer® tube
Additional Information
Congenital platelet function abnormalities are rare. Many acquired conditions can interfere with normal platelet function. Aspirin is among the most common responsible agents, but many other drugs may alter platelet function. Patients with uremia, severe liver disease, or advanced alcohol related conditions often develop a complex bleeding diathesis that induces platelet dysfunction. Myeloproliferative disorders and dysproteinemias may exhibit similar problems.
Billing Information
Fee Codes
CPT Code
85576
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