Macroglobulins
| Abbrev Code: | MACRO | ||
| Order Code: | LAB765 | Order Name: | Macroglobulins |
| Synonyms: | Viscosity, Serum | ||
| Methodology: | Viscosity relative to water | ||
| CPT Codes: | 85810 x1 | ||
| Test Includes: | serum viscosity index | ||
| Turnaround Time: | Performed Mon-Fri; results are reported the same day. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 5 mL |
| Minimum\Peds Volume: | 2.4 mL |
| Container: | Red or gold (gel) Alternate Containers: Red (no gel) |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 2.2 mL, 1.1 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at room temperature. |
| Test Performed at or Referral Lab | UM Specialty Core/Prot/Endo (Sebia B) |
Interpretive
| Reference Range: | Adult: Viscosity Index: 1.4-1.8. |
| Use: | Evaluation of hyperviscosity syndrome most frequent with IgM monoclonal gammopathy (Waldenstrom's macroglobulinemia); next with IgA myeloma. |
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