WIDAL (SALMONELLA) AGGLUTININS, DA
- WIDAL (SALMONELLA) AGGLUTININS, DA
- Start Date
- Expiration Date
- Widal (Salmonella) Agglutinins DA, Proteus
- CPT Codes
- Reference Test
- Transport Info
Centrifuge and immediately transfer serum to separate plastic tube
- Fasting Required?
- Patient Instructions
Submit acute and convalescent sera 1-3 weeks apart.
- Reference Range
Agglutinin titers to somatic and flagellar antigens begin to rise during the second week of infection and peak by the third week. Titers greater than or equal to 1:160 are considered presumptive evidence of S. typhi infection (at an undetermined time). A four-fold increase in titer is required for serodiagnosis of recent infection.