Laboratory Medicine
Test Directory / Cystatin C (and CKD-EPI eGFR)
Cystatin C (and CKD-EPI eGFR)
Brown clotted serum, gel barrier or lithium heparin
| Test | Cystatin C (and CKD-EPI eGFR) |
|---|---|
| Common Abbreviations | CYSC |
| Profile | NA |
| Tube type | Brown clotted serum, gel barrier or lithium heparin |
| Clinical Indication | This test is available for Renal Consulants only. NICE GC182: Consider using eGFRcystatinC at initial diagnosis to confirm or rule out CKD in people with an eGFRcreatinine of 4559 ml/min/1.73 m2, sustained for at least 90 days AND no proteinuria (albumin:creatinine ratio [ACR] less than 3 mg/mmol) or other marker of kidney disease. eGFRcystatinC is reported using the CKD-EPI equestion. |
| Specimen Type | Blood |
| Sample type | Serum |
| Minimum Volume | 0.25mL |
| Special Precautions | No special requirements |
| Stability | 7 days at 4'C once separate from cells |
| Turnaround Time | Contact Referral Laboratory |
| Laboratory | Department of Clinical Biochemistry, Manchester University NHS Foundation Trust, M13 9WL. 0161 276 8766 |
| Reference Interval | Refer to NICE CG 182 |
| Limitations | Interpret eGFRcystatinC with caution in people with uncontrolled thyroid disease because eGFRcystatinC values may be falsely elevated in people with hypothyroidism and reduced in people with hyperthyroidism. |
| Notes |
