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Hepatitis A IgM Blood Test

Acute or Recent Exposure
Sample Report
Specimen Type: Blood


Hepatitis A IgM Blood Test

This test is used to screen for recent exposure to the Hepatitis A virus.  Hep A is a liver infection which is typically spread through exposure to contaminated fecal matter.  Some of the common ways Hep A is spread include

  • Through contaminated drinking water
  • Eating food prepared by someone who has not properly washed their hands
  • Eating produce that has not been properly washed
  • Eating seafood raised in contaminated water
  • Through some forms of sexual contact
  • Exposure to infected blood

This test looks for antibodies which develop shortly after infection.  IgM antibodies are usually detectable 3-4 weeks after exposure and fade out after a couple of months.  After recovery, IgG antibodies develop and often provide immunity from future infections. 

Hepatitis A is typically associated with flu-like symptoms.  Common symptoms include nausea, vomiting, diarrhea, abdominal pain, loss of appetite, fever, fatigue, and joint pain.  In some cases, especially in younger children, Hep A may show no symptoms.    

The Hepatitis A IgM Abs test is typically ordered by people who are experiencing symptoms associated with Hep A or have reason to believe they may have been recently exposed to Hep A.  People wishing to test for past exposure to Hep A or to verify the status of their immunity to Hep A may wish to order the Hepatitis A Total test.

Turnaround time for the Hepatitis A IgM Abs test is typically 1 business day.

Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Incubation Period:

Hepatitis A IgM antibodies are usually detectable 3 to 4 weeks after an initial exposure and return to normal after about 8 weeks. 


This Hepatitis A testing does not have any special requirements.



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Offer expires December 14, 2016.


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