Test Directory
| Test Code | |||||||||||||||||
| IGM | |||||||||||||||||
| Test Name | |||||||||||||||||
| Immunoglobulin M | |||||||||||||||||
| CPT Codes | |||||||||||||||||
| 82784 | |||||||||||||||||
| Expected Turnaround Time | |||||||||||||||||
| 1 - 3 days | |||||||||||||||||
| Clinical Utility | |||||||||||||||||
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Immunoglobulin M (IgM) is the most primitive and least specialized immunoglobulin and the only one that a neonate synthesizes. In adult serum, it accounts for 5 to 10 percent of the total circulating immunoglobulins. It is not transported across the placenta and is an efficient complement activator. |
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| Specimen and Container Info | |||||||||||||||||
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Preferred Specimen Type: Serum Desired Specimen Volume: 2 mL Preferred Collection Container: Gold Top, Serum Separator |
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| Processing and Submission Instructions | |||||||||||||||||
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Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results. |
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| Transport Instructions | |||||||||||||||||
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Transport refrigerated. |
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| Stability Requirements | |||||||||||||||||
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| Methodology | |||||||||||||||||
| Turbidimetric | |||||||||||||||||
| Reference Intervals | |||||||||||||||||
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| Performing Location | |||||||||||||||||
| Roble Road Core Laboratory | |||||||||||||||||
| Testing Schedule | |||||||||||||||||
| Routine, 6 times per week | |||||||||||||||||
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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