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HelpTest Code LEPDTSO Leptospira, IgM, Serum
Additional Codes
Mayo Test Code: LEPDT
Useful For
Aiding in the diagnosis of leptospirosis
This test is not useful for establishing cure or response to therapy.
Method Name
Enzyme-Linked Immunoassay Dot (Immunodot)
Reporting Name
Leptospira, IgM, SSpecimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.3 mL Serum
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Additional Information: If acute and convalescent specimens are being obtained to determine seroconversion, they should be collected 2 or more weeks apart.
Specimen Minimum Volume
Serum 0.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 30 days |
| Frozen | 30 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
Reference Values
Negative
Cautions
The temporal IgM immune response can vary among patients. Therefore, a single negative result by this assay should not be used to exclude diagnosis, especially in patients with symptoms suggestive of leptospirosis who have an appropriate exposure history.
This test does not distinguish between acute or past infection. Clinical correlation is required. Patients may remain seropositive for months to possibly years following resolution of disease; therefore, this test cannot be used to establish cure or response to therapy.
Day(s) Performed
Monday, Thursday
Report Available
Same day/1 to 5 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86720
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LEPDT | Leptospira, IgM, S | 23201-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 65183 | Leptospira, IgM, S | 23201-7 |
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.