IgM
| Abbrev Code: | IGM | ||
| Order Code: | LAB72 | Order Name: | IGM |
| Synonyms: | Immunoglobulin M; Gamma Globulin | ||
| Methodology: | Immunoturbidmetry | ||
| CPT Codes: | 82784 x1 | ||
| Turnaround Time: | Performed Mon-Fri; results are reported within 1 day. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 1 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Red or gold (gel) Alternate Containers: Green (lithium heparin, gel), Green (sodium heparin, no gel), Purple (EDTA), Red (no gel) |
| Causes for Rejection: | Grossly hemolyzed and highly lipemic samples. Samples not separated from cells within 2 hours of collection. |
Processing and Shipping
| Specimen Processing: | Within 2 hours of collection, centrifuge and aliquot 0.5 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | After separation from cells: 7 days refrigerated; indefinitely frozen. |
| Test Performed at or Referral Lab | Endocrine (UMMC-East Bank) |
Interpretive
| Reference Range: |
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| Use: | Evaluate humoral immunity, establish diagnosis and monitor therapy in macroglobulinemia of Waldenstrom and multiple myeloma. Screen cord or neonatal serum for infections acquired in utero. |
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