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HelpTest Code LAB2966 Cystatin C Level
Clinical System Name
Cystatin C Level
Synonyms
Cystatin C
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Gold Microtainer, Red, Lt. green/Lithium heparin
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Note: Can share volume with other serum testing on Vitros (C3, C4, RF)
Processing Instructions
Reject due to: Grossly hemolyzed
Spin: Y
Aliquot: Y
Temp: 2 - 4 C
Storage location: Separate serum or plasma from cells within 2 hours of collection.
CPA refrigerator, FrigA rack. 0.5 mL serum/plasma should be removed from separator for storage.
Off-site collection: Separate serum or plasma from cells within 2 hours of collection. Spin and aliquot 0.5mL serum/plasma in plastic tube. Send refrigerated
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma on gel separator or separated | Room temp |
2 h |
| serum or plasma separated | Refrigerated | 12 d |
| Frozen |
2 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M - F, day shift | 1 - 3 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem
Phone Number: (206) 987-2617
CPT Codes
82610
Methodology
Method: Ortho Vitros 3600
Analytical Volume: 0.4 mL serum/plasma (absolute minimum is 0.250 mL serum/plasma)
Limitations: Test is affected by gross hemolysis.
Reference Range
| Age | mg/L |
| 0 - 3 months | 0.8 - 2.3 |
| 4 - 11 months | 0.7 - 1.5 |
| 1 year and older | 0.5 - 1.3 |