UK NEQAS for Vitamin Assays
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 |
Frequency of distribution | Monthly |
Material distributed | Pooled, liquid human serum with or without exogenous added analyte |
Nominal sample volume (mL) | 1.2 |
Programme Director(s) / Organiser(s) | Finlay MacKenzie |
Analyte | Approximate Range | Default Scheme Units |
---|---|---|
Alpha carotene | 0 – 0.8 | µmol/L |
Beta carotene | 0 – 4 | µmol/L |
Beta cryptoxanthin | 0 – 0.8 | µmol/L |
Lutein + Zeaxanthin | 0 – 0.8 | µmol/L |
Lycopene | 0 – 1.2 | µmol/L |
Vitamin A | 0.5 – 3.5 | µmol/L |
Vitamin E | 5 – 60 | µmol/L |
Zeaxanthin | 0 – 0.4 | µmol/L |
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