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HelpTest Code LAB765 Viscosity, Serum
Additional Codes
Mayo Test Code: SVISC
Specimen Required
Collection Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 3 mL
Collection Instructions:
1. Keep specimen at 37° C (eg, 37° C Thermopak, heat block) until after centrifugation.
2. Centrifuge and aliquot serum into plastic vial.
Useful For
Detection of increased viscosity
Monitoring patients with hyperviscosity syndrome
This test is not useful for patients with small concentrations of monoclonal proteins.
Method Name
Capillary Measurement
Specimen Type
Serum RedSpecimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 14 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
≤1.5 centipoises
Day(s) Performed
Monday through Friday
Report Available
1 to 3 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
85810
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen: