Scheme Particulars Indicative Details
Accreditation body UKAS
UKAS Accredited Proficiency Testing Provider No 7860
Number of distributions per year (nominal) 11
Specimens per distribution 3 (Separate specimens for Creatinine and Cystatin C)
Frequency of distribution Monthly
Material distributed Pooled, liquid human serum with or without exogenous added analyte
Nominal sample volume (mL) 0.5 (0.25 mL Cystatin C)
Programme Director(s) / Organiser(s) Finlay MacKenzie
Analyte Approximate Range Default Scheme Units
Cystatin C 0 – 10 mg/L
eGFR (CKD) 10 – >90 mL/min/1.73m2
eGFR CKD-EPI Cys 10 – >90 mL/min/1.73m2
eGFR CKD-EPI SCr 10 – >90 mL/min/1.73m2
expected eGFR CKD MDRD 10 – >90 mL/min/1.73m2
expected eGFR CKD-EPI Cys 10 – >90 mL/min/1.73m2
expected eGFR CKD-EPI SCr 10 – >90 mL/min/1.73m2
Serum creatinine - CKD 25 – 500 µmol/L
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