Hepatitis A Virus Antibody, IgM
Also known as: HAVABM
Use
The Hepatitis A Virus Antibody, IgM test is used to diagnose acute hepatitis A virus infection. The presence of IgM antibodies against the hepatitis A virus suggests a current or recent infection, which is essential for clinical diagnosis and management of patients presenting with symptoms of viral hepatitis. It aids in distinguishing acute hepatitis A from other causes of hepatitis and is a crucial tool for the timely implementation of public health measures to prevent further transmission.
Special Instructions
This test should be ordered when acute hepatitis A infection is suspected. It includes qualitative chemiluminescent immunoassay (CLIA) methodology. Serum or K2EDTA plasma specimens must be separated from cells as soon as possible or within 2 hours of collection and transferred to an ARUP standard transport tube. Heparinized plasma and specimens containing particular conditions are not acceptable.
Limitations
The test has limitations in certain specimen conditions, including heparinized plasma, citrate-based anticoagulant specimens, and those containing particulate matter or that are heat-inactivated, severely hemolyzed, or lipemic. Ambient temperature storage is unacceptable; refrigerated specimens are stable for 1 week, while frozen specimens are stable indefinitely, provided freeze/thaw cycles are avoided. An equivocal result may require retesting to assess seroconversion status in borderline results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 13950-1
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Separate serum from cells as soon as possible or within 2 hours of collection.
Storage Instructions
Refrigerated storage required. Ambient is unacceptable.
Causes for Rejection
Heparinized plasma, specimens collected in citrate-based anticoagulant, specimens containing particulate material, heat-inactivated, severely hemolyzed, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Unacceptable |
| Refrigerated | 1 week |
| Frozen | Indefinitely (avoid repeated freeze/thaw cycles) |