Test Overview
Test Methodology

Enzyme-Linked Immunoassay Dot (Immunodot)

Test Usage

Aid in the diagnosis of leptospirosis.

Reference Range *

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

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.

Test Details
Days Set Up
Monday, Thursday
Analytic Time

2 - 5 days

Soft Order Code
LEPDT
MiChart Code
Leptospira IgM Antibody
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo LEPDT
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect specimen in an SST (preferred) or red top tube. Centrifuge, aliquot of serum into a plastic vial and refrigerate. Acute and convalescent specimens obtained to determine seroconversion should be collected 2 or more weeks apart.

    Normal Volume
    0.3 mL serum
    Minimum Volume
    0.1 mL serum
    Storage Temperature
    Refrigerated preferred, frozen acceptable
    Rejection Criteria
    Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens are not acceptable.
    Additional Information

    Test is sent to Mayo Clinic Laboratories.

    Billing
    CPT Code
    86720
    Fee Code
    32151
    LOINC
    23202-5
    NY State Approved
    No