
Widal Test (Slide Agglutination)










The Widal Test (Slide Agglutination) helps detect typhoid and paratyphoid fever, collectively known as enteric fever, by identifying the antibodies against two antigens (O & H) of typhoid-causing bacteria, Salmonella typhi. Early detection of enteric fever is crucial to prevent severe complications like intestinal bleeding or perforation.













Understanding Widal Test (Slide Agglutination)
Enteric fever is a life-threatening disease caused by the bacteria Salmonella enterica serotype Typhi (S. Typhi). It is usually transmitted through food and drinks contaminated with fecal matter. The most common symptoms of typhoid include high fever, headache, fatigue, diarrhea or constipation, a specific rash called rose spots, abdominal pain, and weight loss. They may be noticed about 1 to 2 weeks after being infected.
You may need the Widal Test (Slide Agglutination) if you have traveled to areas where the infection is present or if you have been in close contact with someone who has traveled to the infected areas or is infected. Individuals close to the infected person should also get tested to rule out the possibility of infection transmission. No special preparation is needed for a typhoid test; eat or drink as per your daily routine. However, talk to your doctor about all the pre-test instructions.
Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. Narrate your complete medical history to help the doctor correlate your clinical and laboratory findings. The test results will help them determine your medical condition, make recommendations for lifestyle modifications such as diet and exercise, decide whether or not medication will be required to manage your condition and formulate your overall treatment plan.
What does Widal Test (Slide Agglutination) measure?
The Widal Test (Slide Agglutination) helps detect antibodies in the blood against typhoid-causing bacteria called Salmonella typhi.









FAQs related to Widal Test (Slide Agglutination)
- Typhoid fever [Internet]. NHS; 20 Sept. 2021 [Accessed 25 May 2023]. Available from:
- Typhoid Fever and Parathyroid Fever [Internet]. CDC; 12 Dec. 2022 [Accessed 25 May 2023]. Available from:
- Typhoid [Internet]. WHO; 30 Mar. 2023 [Accessed 25 May 2023]. Available from:
- Bhutta ZA. Current concepts in the diagnosis and treatment of typhoid fever. BMJ. 2006;333(7558):78-82. [Accessed 25 May 2023]. Available from:
Other tests
- Stool Examination R/M
- Stool For Occult Blood
- Allergy Panel (107 Allergens), LIA
- Tissue Transglutaminase Antibody, IgA
- Calprotectin, Stool
- Widal Test (Tube Agglutination)
- CA 72.4
- Stool Culture and Sensitivity (Aerobic)
- Ultrasound Lower Abdomen
- Food Intolerance Test, in Collaboration with Cambridge Nutritional Sciences, UK (powered by Omega Diagnostics)
- CBC (Complete Blood Count)
- FBS (Fasting Blood Sugar)
- Thyroid Profile Total (T3, T4 & TSH)
- HbA1c (Glycosylated Hemoglobin) Test
- PPBS (Postprandial Blood Sugar)
- Lipid Profile
- Vitamin D (25-Hydroxy)
- Urine R/M (Urine Routine & Microscopy)
- Coronavirus Covid -19 test- RT PCR
- LFT (Liver Function Test)
- KFT (Kidney Function Test)
- TSH (Thyroid Stimulating Hormone) Ultrasensitive
- ESR (Erythrocyte Sedimentation Rate)
- Uric Acid, Serum
- Vitamin B12
- CRP (C-Reactive Protein), Quantitative
- Urine C/S (Urine Culture and Sensitivity)
- Serum Electrolytes
- Serum Calcium test
- Serum Creatinine
- Diabetes Screening (HbA1C & Fasting Sugar)
- KFT with Electrolytes (Kidney Function Test with Electrolytes)
- Cholesterol - Total
- Hb (Hemoglobin)
- Complete Hemogram (CBC & ESR)





















