Brucella IgG Test Overview
The Brucella IgG test detects immunoglobulin G antibodies against Brucella bacteria, indicating past or chronic exposure to brucellosis, a zoonotic infection often from unpasteurized dairy or animal contact.
What It Measures
This serologic test, typically via ELISA with possible reflex to agglutination, identifies IgG response that peaks weeks after infection onset, helping differentiate acute (IgM-dominant) from chronic cases.
Indications of Brucella IgG Test.
Order for unexplained fever, sweats, fatigue, joint pain, or musculoskeletal issues in at-risk individuals like farmers, vets, or those consuming raw milk products; also for monitoring treatment in confirmed brucellosis.
Patient Preparation
No fasting required; uses a standard blood draw (serum sample). Avoid recent antibiotics if possible, and inform the lab of any prior Brucella testing or vaccinations.
Reference Values
Typically: <0.80 = Negative (no antibody)
0.80-1.09 = Equivocal
≥1.10 = Positive (antibody detected)
Titers >1:160 often suggest active/chronic infection; confirm positives with agglutination. Values vary by lab and method.
Report Turnaround
Results usually available in 1-5 days, faster at high-volume labs; reflex testing may add 1-2 days.
Ordering via Labtestzote (Nairobi)
