| HEPATITIS A VIRUS ANTIBODY IgM (087-7175) | |
|---|---|
| Test Mnemonic: | HAVM |
| Specimen Requirements: | |
| Collection: | Serum separator tube (SST) (Preferred), Plasma separator tube (PST) or red stopped vacutainer tube.
|
| Minimum Volume: | 3 mL of blood |
| Storage/Transport: | Delivered to Sample Management within 2 hours of collection. |
| Specimen Preparation: | Allow specimen to clot completely at room temperature. Centrifuge to separate serum from cells within 2 hours of collection. Transfer serum from collection tube to labeled plastic transport tube. |
| Stability: | Room temperature for ≤ 8 hours, refrigerated for ≤ 7 days. If the test will not be completed within 7 days, or frozen for indefinitely. (Avoid repeated freeze/thaw cycles). |
| Causes for Rejection: | Specimens containing particulate matter, heat-inactivated specimens, incomplete and/or incorrect sample identification, improper storage/transport, and gross hemolysis and lipemia. |
| Reference Range: | By report (reports may vary based on instrumentation, patient age and sex) |
| Turnaround Time: | Routine: 8 hours, ASAP : 4 hours |
| Methodology: | Automated EIA- chemiluminence (OCD 3600) |
| Performed: | 24 hours a day; 7 days a week |
| Lab: | Clinical Chemistry |
| Clinical Indication: | Recommended tests to determine chronic hepatitis are Hepatitis B Surface antigen, Hepatitis B Core antibody IgM and Hepatitis C virus antibody. |
| CPT 4 Code: | 86709 Limit Coverage Test (NCD) |
| Note: | Consider this test for work-up of acute hepatitis. If the patient has previously been positive for HAV IgM, it is recommended to wait three months before testing again. If the patient has no detectable antibody, it is recommended to wait three months before testing again. Tests on samples collected less than three months from the initial results will be cancelled, unless approved by a Chemistry Director or their designee. Recommended tests to determine acute hepatitis (see note) are Hepatitis A antibody IgM, Hepatitis B Surface antigen, Hepatitis B Core antibody IgM and Hepatitis C virus antibody. |
| When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent. | |