Test Details
Methodology
Enzyme-linked immunosorbent assay (ELISA)
Result Turnaround Time
7 - 10 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Test Includes
This test is a component of Myomarker 3 Profile, Myomarker 3 Profile Plus, Interstitial Lung Disease Panel I, Interstitial Lung Disease Panel II, ILDx Complete.
Use
Anti-MDA5 antibodies are present in 7-35% of adult DM. Clinical features consist of absent or mild muscle symptoms (CADM), rapidly progressive ILD, specific mucocutaneous features of skin ulcerations and papules, oral ulcerations, and arthritis.
Limitations
This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.3 mL (Note: This volume does not allow for repeat testing.)
Container
Red-top tube or gel-barrier tube
Collection Instructions
Separate serum from cells within one hour of collection. Transfer to a plastic transport tube before shipping. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 7 days |
Refrigerated | 14 days |
Frozen | 60 days |
Freeze/thaw cycles | Stable x1 |
Storage Instructions
Refrigerate or freeze.
Causes for Rejection
Grossly hemolyzed; bacterial contamination; lipemic specimen; icteric specimen; non-serum specimen types
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 520002 | Anti-MDA-5 Ab (CADM-140)(RDL) | 88725-7 | 520003 | Anti-MDA-5 Ab (CADM-140)(RDL) | Units | 88725-7 |
| Order Code | 520002 | |||||
| Order Code Name | Anti-MDA-5 Ab (CADM-140)(RDL) | |||||
| Order Loinc | 88725-7 | |||||
| Result Code | 520003 | |||||
| Result Code Name | Anti-MDA-5 Ab (CADM-140)(RDL) | |||||
| UofM | Units | |||||
| Result LOINC | 88725-7 |