Dengue Fever Virus Ab, IgM
Commercial Mailout Laboratory
|Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.1 mL serum
Contaminated, heat-inactivated, hemolyzed, or severely lipemic
Submit specimen to laboratory as soon as possible after
collection period is completed.
1-5 days upon receipt at reference laboratory
1.64 IV or less: Negative - No significant level of detectable dengue
fever virus IgM antibody.
1.65-2.84 IV: Equivocal - Questionable presence of antibodies. Repeat
testing in 10-14 days may be helpful.
2.85 IV or greater: Positive - IgM antibody to dengue fever virus
detected, which may indicate a current
or recent infection.
However, low levels of IgM antibodies may occasionally persist for more
than 12 months post-infection.
The best evidence for current infection is a significant change on two
appropriately timed specimens, where both tests are done in the same
laboratory at the same time.
Acute and convalescent specimens must be labeled as such; parallel
testing preferred. Convalescent sample must be received within 30 days
of acute specimens.
Semi-Quantitative Enzyme-Linked Immunosorbent Assay