FRANCISELLA TULARENSIS ANTIBODIES IGG/IGM

Mnemonic

MISC

Specimen Collection Requirements

Collect

Serum separator tube

Handling

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to a standard transport tube.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL

Transport

Refrigerated.

Rejection Criteria

Contaminated, heat-inactivated, or turbid specimens

Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year

Testing Information

Note

Cross reactivity with Brucella and Yersinia antibodies may occur. Therefore, results should be interpreted with caution and correlated with clinical information. The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are performed in the same laboratory at the same time.

Performed

Mon, Wed, Fri

Method

Semi-Quantitative Enzyme-Linked Immunosorbent Assay

Referral Lab

ARUP 2005350

Reference Values

Reference Values

Francisella tularensis Antibody, IgG Francisella tularensis Antibody, IgM
9 U/mL or less Negative - No significant level of IgG antibody to Francisella tularensis detected. 10-15 U/mL Equivocal - Questionable presence of IgG antibody to Francisella tularensis. Repeat testing in 10-14 days may be helpful. 16 U/mL or greater Positive - Presence of IgG antibody to Francisella tularensis detected, suggestive of current or past exposure/immunization. 9 U/mL or less Negative - No significant level of IgM antibody to Francisella tularensis detected. 10-15 U/mL Equivocal - Questionable presence of IgM antibody to Francisella tularensis. Repeat testing in 10-14 days may be helpful. 16 U/mL or greater Positive - Presence of IgM antibody to Francisella tularensis detected, of current or past exposure/immunization.

CPT Codes

86668 x2

Last Updated: Thursday, January 5, 2017 03:42:12 AM