Typhi Dot Combo (Salmonella typhi IgG & IgM)

Typhidot detects IgM and IgG antibodies to Salmonella typhi. IgM positive indicates recent or acute infection (early phase); IgG positive reflects later-stage response, past infection, or carrier state. Both positive suggests ongoing or recent infection transitioning to recovery. Results require clinical correlation and confirmatory tests (e.g., blood culture) because antibody tests can give false positives or persist after infection.

The Salmonella typhi IgG/IgM combo is a serological blood test that detects IgM (acute/recent) and IgG (past or late) antibodies to S. typhi. It’s a point‑of‑care or lab immunoassay used for screening suspected typhoid fever; requires a blood sample and gives rapid results. IgM positivity suggests recent infection, IgG indicates prior exposure or recovery. Confirm with blood culture and clinical correlation.

If both IgM and IgG are positive, it usually indicates a recent or ongoing infection with the immune response in transition (early seroconversion). This may mean you could still be infectious. Interpret results alongside symptoms, exposure history and vaccination status, and confirm with molecular testing (PCR) or repeat serology. False positives or cross‑reactivity can occur—consult your healthcare provider for isolation guidance, treatment and follow‑up testing.

Salmonella typhi is harmful: it causes typhoid fever, a serious, human-specific infection transmitted via contaminated food or water. Symptoms include prolonged high fever, abdominal pain, headache, and diarrhoea or constipation; complications can be severe. Diagnosis requires medical testing and treatment with appropriate antibiotics. Prevention focuses on safe water and food, hand hygiene, and vaccination where recommended.

A positive IgM usually indicates a recent or current infection, but it can be false positive or cross‑reactive. Interpretation depends on your symptoms, timing since exposure, and disease‑specific tests (for example PCR or IgG seroconversion). Contact your healthcare provider for clinical evaluation and confirmatory testing; they’ll advise on treatment or repeat testing. If you’re pregnant or immunocompromised, seek urgent advice.

Avoid raw or unpeeled fruits and vegetables, salads, and uncooked seafood; street food and anything of uncertain hygiene. Also avoid undercooked meat, raw or soft‑boiled eggs, unpasteurized dairy, and shellfish. Stay away from oily, spicy, fried, or heavy high‑fiber foods that irritate the gut, plus alcohol and excessive caffeine until recovery. Prefer well‑cooked, simple, hygienic meals.