Cystatin C; Cystatin C eGFR
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Cystatin C with Estimated Glomerular Filtration Rate (eGFR), Serum/Plasma
Test ID: CYSTC
Test
Method
Immunoturbidimetric
Platform
Roche Cobas c501
Report Includes
Specimens
Serum; Plasma (Li heparin)
Test Location
Children's Hospital Eastern Ontario, 401 Smyth Road, Ottawa ON K1H 8L1
Test Version
26-May-2023
Specimen
Specimens
Serum; Plasma (Li heparin)
Sample Volume
1 mL
Collection & Handling
Handling Information
Separate and freeze immediately. Store and send frozen.
Stability
| Refrigerated | 7 days |
|---|---|
| Frozen | See below |
Additional Stability Information
Stability at -20°C or lower: Plasma 6 months or serum 24 months.
If the specimen thaws, it is unsuitable for analysis.
Rejection Criteria
| Specimen | Not frozen |
|---|
Test Version
26-May-2023
Performance / Interpretation
Method
Immunoturbidimetric
Platform
Roche Cobas c501
Turnaround Time
5 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Cystatin C | mg/L |
|
mg/dL x 10 | |
| CYSCeGFR | mL/min/1.73m2 |
|
||
|
For anyone <18 years of age, eGFR will be calculated using the Schwartz Cystatin C Equation (Kidney Int. 2012 Aug;82(4):445-53).
For anyone ≥18 years of age, eGFR will be calculated using the CKD-EPI Cystatin C Equation (NEJM. 2012 Jul5;367(1):20-9). |
||||
Test Location
Children's Hospital Eastern Ontario, 401 Smyth Road, Ottawa ON K1H 8L1
Test Version
26-May-2023
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| CYSTC | 28596Cystatin C | mg/mL |
| 28597CYSTCeGFR | mL/min/1.73m2 |
Test Version
26-May-2023