Widal Panel
Test Mnemonic
SALM
CPT Codes
- 86768 - QTY (5)
Aliases
- S typhi H and O antibodies
- Salmonella typhi and paratyphi Antibodies
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.2 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 2 days |
| Frozen | After separation from cells: 1 year (Avoid repeated freeze/thaw cycles) |
| Refrigerated | After 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.