ARUP's Laboratory Test Directory

Lymphocytic Choriomeningitis (LCM) Virus Antibodies, IgG & IgM, CSF : 2001628

Mnemonic: LCM CSF

Methodology: Semi-Quantitative Indirect Fluorescent Antibody
Performed: Tue, Fri
Reported: 1-5 days
Specimen Required: Collect: CSF.

Specimen Preparation: Transfer 1 mL CSF to an ARUP Standard Transport Tube. (Min 0.2 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Contaminated, hemolyzed, or heat-inactivated specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
Test Number Components Reference Interval
2001629Lymphocytic Choriomeningitis (LCM) Virus Antibody, IgG, CSF < 1:1 Negative - No significant level of LCM virus IgG antibody detected.
≥ 1:1 Positive - Presence of IgG antibody to LCM virus detected, suggestive of current or past infection.
2001630Lymphocytic Choriomeningitis (LCM) Virus Antibody, IgM, CSF < 1:1 Negative - No significant level of LCM virus IgM antibody detected.
≥ 1:1 Positive - Presence of IgM antibody to LCM virus detected, suggestive of current or past 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.

Refer to Statement D under Testing Information at http://www.aruplab.com.
CPT Code(s): 86727 x2