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HelpTest ID BLOD0772 West Nile IgM
Additional Information
Samples are best collected 10 days after onset of symptoms.
Antibodies may not show up earlier than that and could result in a
false negative.
Positives are repeated on the next scheduled testing day.
This test requires its own frozen aliquot.
Seasonal testing – scheduled times may vary.
Specimen Type/Requirements
Gold top (Serum w/gel) tube - Serum
Red top (Serum w/out gel) tube - Serum
Test is affected by hemolysis and lipemia.
Stability/Transport
| Room Temperature | 8 hours | |
|---|---|---|
| Refrigerated | 48 hours | |
| Frozen | 7 days | Preferred for transport |
Performed Test Frequency
Testing is seasonal. Currently performed on Tuesdays
only.
Methodology
EIA
Performing Lab
Sanford Laboratories Sioux Falls
CPT
86788
Specimen Volume
| Preferred Volume | 1.0 mL |
|---|---|
| Minimum Volume | 0.5 mL |
Report Available
Seasonal: 1 - 7 days
Out of Season: 1 - 14 days
Interface Build Information
| Result Code | Result Code Description |
|---|---|
| 4688 | West Nile IgM |
| 7842 | Reagent Blank |
| 7846 | IgM Patient OD |
| 7847 | IgM Cutoff Cal |
| 7848 | IgM Index |