Widal Panel




Test Mnemonic

SALM

CPT Codes

  • 86768 - QTY (5)

Aliases

  • S typhi H and O antibodies
  • Salmonella typhi and paratyphi Antibodies

Includes

  • Salmonella typhi/paratyphi Abs

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold) Refrigerated 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.2 mL     

Stability

Environmental Condition Description
AmbientAfter separation from cells: 2 days
FrozenAfter separation from cells: 1 year (Avoid repeated freeze/thaw cycles)
RefrigeratedAfter separation from cells: 2 weeks

Days Performed

Tue, Thu, Sat

Turnaround Time

3 - 6 days

Methodology

Name Description
Immunoblot (IB) 

Reference Range

Special Info

This assay detects antibodies directed against 5 Salmonella typhi and paratyphi antigens: O Type D, O Type Vi, H Type A, H Type B or H Type D. Hemolyzed, icteric, contaminated, heat-inactivated, lipemic, or turbid specimens will be rejected. This test is New York DOH approved.

Clinical Info

May be used to determine past exposure to S. typhii (eg, infection or vaccination) and S. paratyphi. This test cannot be used to confirm acute salmonellosis. If systemic symptoms of acute salmonellosis are present, the preferred tests are Stool Culture and E. coli Shiga-like Toxin by EIA and Blood Culture if typhoid fever is suspected.