| Ordering Code | 568 |
|---|---|
| Test Name | Cryoglobulins |
| Alias | Cryoglobulin, Serum, Qualitative |
| Preferred Specimen | Serum |
| Preferred Container | Plain (Red) Do Not Use SST. |
| Optimum Volume | 2 mL |
| Collection Instructions | Fasting specimen (8 hours). Draw only at sites w/37 degree C waterbath or heating block. Prior to draw, preheat collection tube at 37 degree C for 15 minutes. |
| Handling Instructions | Allow specimen to clot at 37 C for 1 hour. Prior to centrifugation, prewarm the centrifuge by running the centrifuge empty for 10 minutes. Separate serum, keep at room temperature, and send aliquot to the laboratory. |
| Transport Requirements | Oahu: Ambient Airline: Ambient |
| Specimen Stability | Ambient: 3 Days |
| Rejection Criteria | Frozen, Gross Hemolysis, Gross Lipemia, Hazy or Cloudy specimens, Plasma or SST Serum, Non-fasting specimens, Specimen older than stability limits, Specimen not allowed to clot at 37 deg. C |
| Avail. Stat | NO |
| Analytic Time | 7 Days |
| Methodology | Visual examination for precipitate, gel or crystal formation. |
Reference range(s)
The reference ranges listed below are valid on this date of July 12, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Cryoglobulins | ALL | NEGATIVE | NEGATIVE |