UW Hospital and Clinics Lab Test Directory
| Test Name: |
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Platelet Autoantibodies
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| Test Code(s): |
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PLTABS / HCPLTABS
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| CPT Code(s): |
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86022 , 86023
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| Methodology: |
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ELISA
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| Testing Site: |
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Testing will be sent to an approved reference laboratory.
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| Turnaround Time: |
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Routine: 3 - 5 days.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Instructions: |
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Collect blood in ACD-A tubes. ACD-B tubes are also acceptable. Collect 40 mL of blood if platelet count is <100,000 or 10 mL of blood if platelet count is >100,000. For pediatric testing, collect as close to stated volumes as possible. Testing is dependent on the amount of platelets recoverable from submitted samples.
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| Collection Container: |
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Preferred: See collection instructions.
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| Collection Volume: |
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Preferred: See collection instructions.
Pediatrics: See collection instructions.
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| Sample Analyzed: |
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Whole Blood
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.
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| Stability: |
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Ambient: Not acceptable
Refrigerated: 4 days
Frozen: Not acceptable
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Interpretation
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Idiopathic Thrombocytopenia Purpura ITP
Indirect and Direct Platelet Antibodies
Platelet Associated IgG and IgM
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