ARUP's Laboratory Test Directory

Bartonella henselae (Cat Scratch) Antibodies, IgG & IgM by IFA : 0050108

Mnemonic: CATSCRATCH

Methodology: Semi-Quantitative Indirect Fluorescent Antibody
Performed: Mon, Thu
Reported: 1-8 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent.

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Contaminated, hemolyzed, or severely lipemic 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
0050091Bartonella henselae Antibody, IgG by IFA <1:64 Negative - No significant level of Bartonella henselae IgG antibody detected.
1:64-1:128 Equivocal - Questionable presence of Bartonella henselae IgG antibody detected. Repeat testing in 10-14 days may be helpful.
≥1:256 Positive - Presence of IgG antibody to Bartonella henselae detected, suggestive of current or past infection.
0050092Bartonella henselae Antibody, IgM by IFA < 1:16 Negative - No significant level of Bartonella henselae IgM antibody detected.
≥ 1:16 Positive - Presence of IgM antibody to Bartonella henselae detected, suggestive of current or recent infection.

Interpretive Data: Refer to individual components.

See Compliance Statement A: www.aruplab.com/CS
CPT Code(s): 86611 x2
Cross References: Cat Scratch Fever (Bartonella henselae (Cat Scratch) Antibodies, IgG & IgM by IFA)