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HelpTest ID MZIKV Zika Virus IgM Antibody Capture MAC-ELISA, Serum
Useful For
Screening for the presence of IgM-class antibodies to Zika virus in patients presenting with symptoms for 14 or more days
Establishment of baseline serologic levels of IgM-class antibodies to Zika virus in women who have traveled to a Zika virus endemic region or who have had sexual exposure to Zika virus and who are considering conception
Highlights
This assay is a screening test for IgM-class antibodies to Zika virus. A presumptive positive result by this assay is not diagnostic for Zika virus infection and requires confirmatory testing by plaque reduction neutralization testing (PRNT) performed at the CDC or a CDC-designated laboratory. Confirmatory testing by a molecular assay for detection of Zika virus RNA may also be considered.
This assay should be used in patients presenting at least 2 weeks postsymptom onset or last possible exposure to Zika virus. Reverse transcription-polymerase chain reaction (RT-PCR) for Zika virus RNA detection should be ordered in patients with less than 2 weeks of symptoms or postexposure.
A single negative result by the Zika IgM ELISA should not be used to rule-out infection as the specimen may have been collected prior to the development of detectable antibodies.
Testing Algorithm
The following algorithms are available in Special Instructions:
-Assessment for Zika Virus Infection in Nonpregnant Individuals
-Assessment for Zika Virus Infection in Pregnant Women
-Mosquito-borne Disease Laboratory Testing
Special Instructions
Method Name
IgM Antibody Capture Enzyme-Linked Immunosorbent Assay (MAC-ELISA)
Reporting Name
Zika Virus MAC-ELISA, IgM, SSpecimen Type
SerumAdvisory Information
This test is not intended for medical-legal use.
For specimens collected less than 14 days postsymptom onset or possible Zika virus exposure, the CDC recommends RT-PCR for ZIKV on serum and urine to exclude a false-negative Zika virus IgM result. These are available as RZIKU / Zika Virus, PCR, Molecular Detection, Random, Urine and RZIKS / Zika Virus, PCR, Molecular Detection, Serum.
Additional Testing Requirements
This is a screening test for Zika virus. A presumptive positive result requires confirmatory testing available from the CDC or a CDC-designated laboratory.
Due to similar clinical presentation and cross reactivity, testing for IgM-class antibodies to dengue virus, concurrently with Zika virus IgM testing, is recommended, order DENVP / Dengue Virus Antibody/Antigen Panel, Serum.
Necessary Information
There are 3 ask-at-order entry questions that are required. The only acceptable answers are Yes or No.
Specimen Required
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Specimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen | 30 days |
Reference Values
Negative
Day(s) and Time(s) Performed
Monday, Thursday; 9 a.m.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared or approved by the U.S. 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
86794
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MZIKV | Zika Virus MAC-ELISA, IgM, S | 80824-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SZIKV | Zika Virus MAC-ELISA IgM, S | 80824-6 |
| PREGO | Pregnant? | 11449-6 |
| TRVL | Travel to/Resident of Zika Region? | 8691-8 |
| SYMPS | Current or prior Zika symptoms? | 75325-1 |
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.