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Hepatitis A, IgM Antibody

Item Value
Approval req'd? No
Available Stat? No
Test code HAVM
Test group Hepatitis
Performed by Immunology
In House Availability Twice per week
Method Microparticle Chemiluminescent Immunoassay
Collection Instructions Should not be ordered in conjunction w/ HAV Antibody, Total.
Container type Gold top
Amount to Collect 1 mL blood
Sample type Serum
Preferred volume 0.5 mL serum
Processing notes Refrigerate serum.
Normal range Negative
Synonyms HAV IgM Antibody; HAV IgM Ab; HAAb; anti-HAV antibody
Stability Refrigerated 6 days
Turn around times 1-4 days
Additional information This is the test of choice for the diagnosis of acute HAV infection; it is positive at the time a patient presents with clinical illness. The IgM antibody persists for up to 6 months, and a negative IgM antibody test rules out acute HAV infection in an immunocompetent subject.

For determination of immunity or vaccine response 'HAV Ab, Total' is the appropriate test to order

Positive results are automatically forwarded to California public health per regulations. However, this does not absolve the ordering provider from any additional reporting if such is required.
LOINC code 13950-1
Last Updated 11/15/2013 12:53:18 PM
Entry Number 476
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