Dengue Fever Virus Ab, IgM
Label Mnemonic: DENM
Epic Lab Code: LAB2990
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.1 mL serum
Rejection Criteria:
Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.
Delivery Instructions:
Submit specimen to laboratory as soon as possible after collection period is completed.
Turn Around Time:
1-5 days upon receipt at reference laboratory
Reference Range:
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.
Interpretive Data:
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.
Comments:
Acute and convalescent specimens must be labeled as such; parallel testing preferred. Convalescent sample must be received within 30 days of acute.
Methodology:
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
CPT Code:
86790