Test Overview

Test Methodology

Optical turbidometric aggregation and ATP release using a Lumi-Aggregometer.

Test Usage

Evaluation of functional integrity of the platelets, aid in diagnosis of von Willebrand's disease, Glanzmann's thrombasthenia, storage pool disease, Bernard-Soulier syndrome, and platelet function abnormalities induced by metabolic abnormalities.

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

AGG

MiChart Code

AGGLUTINATING AB

Synonyms

Synonyms

Platelet function with EPI
Platelet function with ADP
Platelet function with epinephrine (EPI)
Platelet function with Eppy
Platelet Function Studies
AGG
PLATELET AGGREGATION STUDIES
Ristocetin Induced Platelet Agglutination
Ristocetin Aggregation

+ See More

Laboratory

Hematopathology

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Specimen Requirements

Offsite Collection Instructions

Contact MLabs Client Services Center at 800-862-7284 for information regarding scheduling the test. The patient must have specimen collected at the UM Cardiovascular Center blood draw station level 3 or C.S. Mott Children's Hospital and Von Voigtlander Women's Hospital blood draw station.

Special Handing

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DO NOT DRAW PATIENT WITHOUT SPECIAL COAGULATION TECHNOLOGIST PRESENT.
DO NOT SEND THROUGH PNEUMATIC TUBE SYSTEM.
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Contraindication

Test is contraindicated in:
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Patients with platelet counts less than 140,000/ml. Requires medical director approval.
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.
Children under 2 years of age.
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Container

Blue Top Tube

Normal Volume

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4 full 2.8 ml 3.2% sodium citrate blue top Vacutainer® tubes
1 2 ml EDTA K2 lavender top Vacutainer® tube
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Minimum Volume

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4 full 2.8 ml 3.2% sodium citrate blue top Vacutainer® tubes
1 2 ml EDTA K2 lavender top Vacutainer® tube
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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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