Bilirubin Direct

The Widal test is a blood test used to detect typhoid and paratyphoid fever, which are caused by Salmonella bacteria. It measures the presence of specific antibodies (agglutinins) against Salmonella typhi (O and H antigens) and Salmonella paratyphi (AH and BH antigens) in the patient’s blood.

• To evaluate liver function

• To help diagnose liver diseases (e.g., hepatitis, cirrhosis)

• To detect blockages in the bile ducts (e.g., gallstones, tumors)

• To investigate the cause of jaundice

Sample Required:
A blood sample

Fasting Required:

Fasting for 8–12 hours is often recommended for more accurate results.

• Elevated Direct Bilirubin may indicate:

  • Liver diseases (e.g., hepatitis, alcoholic liver disease)

  • Bile duct obstruction (e.g., gallstones, tumors)

  • Drug-induced liver injury

• Normal Direct Bilirubin with high total bilirubin may suggest elevated indirect bilirubin instead (e.g., in hemolytic anemia or Gilbert’s syndrome)