Days Set Up
Monday - Saturday
Analytic Time

4 - 10 days

MiChart Code
Cell Bound Platelet Autoantibody (Mayo)
Soft Order Code

Test Updated:


Anti-platelet Antibodies
Anti-Platelet Antibody
Platelet Antibody
Platelet Antibody, Direct
Platelet Associated Antibody
Platelet Associated IgG
Cell Bound Platelet Autoab
CBPA Comment
Cell Bound Platelet Ab

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All specimens should be accompanied by a requisition.

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Test Overview

Test Methodology

Solid Phase Enzyme-Linked Immunosorbent assay (ELISA)

Test Usage

Diagnosis of idiopathic (autoimmune) thrombocytopenia purpura, immune thrombocytopenia associated with SLE or other disorders associated with autoimmune phenomena.

Reference Range

Negative. If positive, glycoprotein specificity will be identified.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect blood in a sufficient number of lavender top (EDTA) tubes. The patient must have a platelet count above 10,000 mm3. Draw Monday through Thursday only, and not the day before a holiday.

Collection Offsite

Collect blood in a sufficient number of lavender top (EDTA) tubes. Send intact whole blood ambient within 24 hours of collection. The patient must have a platelet count above 10,000 mm3. Specimens are accepted Monday through Thursday only and not the day before a holiday (specimen must be received by MLabs by 6:00 pm). Please include the following information: 1) patient diagnosis 2) has patient had IVIG in the last 30 days? 3) has patient had a platelet transfusion in the last 72 hours? 4) a copy of the patient's platelet count results.

Lavender Top Tube
Normal Volume
20 mL EDTA whole blood
Minimum Volume
5 mL EDTA whole blood (Pediatric)
10 mL EDTA whole blood (Adult)

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.