91138      Herpes Simplex Virus 1 and/or 2 Antibody, IgM
Specimen:
  Collect: One 7.5 mL SST  
  Submit: 0.5 mL (Min:0.2 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.  
  Special Handling: Separate from cells ASAP
If acute and convalescent samples being submitted, label as such. convalescent sample must be received in lab within 30 days 
  Rejection Criteria: Grossly Lipemic Samples
Hemolyzed specimens
Icteric specimen 
  Stability: Ambient: 2 Day(s); Refrigerated: 2 Week(s); Frozen: 12 Month(s); Incubated: Unacceptable 
Methodology: Enzyme-Linked ImmunoSorbent Assay (ELISA) 
Performed: Sun-Sat 
Reported: 2-3 Day(s) 
CPT Codes:
86694 - Herpes Simplex Antibody
Interpretive Data:
<0.91 IV: Negative - No significant level of detectable HSV IgM antibody
0.91-1.09 IV: Equivocal. Repeat testing in 10-14 days may be helpful
>1.09 IV: Positive - IgM antibody to HSV detected which may indicate a current or recent infection
While presence of IgM antibody suggests current or recent infection, low levels of IgM antibody may occassionally persist for more than 12 months post-infection.