MK-7 at endogenous concentrations in human serum
Assessment of vitamin K status
PURPOSE OF PROGRAMME:
Harmonisation of vitamin K status assessment
MATERIAL PROVIDED: Serum and ethanolic standards
DISTRIBUTIONS PER YEAR: Four
SAMPLES PER DISTRIBUTION: Three
FREQUENCY OF DISTRIBUTION: Once annually
PROGRAMME OF ANALYSIS:
Grubbs test for outliers and Z scores
PERSISTENT POOR PERFORMANCE:
Outlier or Z score > 3 for two consecutive rounds, Z score > 2 for three consecutive rounds.
Clinical Chemistry (Birmingham Quality)
The External Quality Assessment Scheme for Clinical Chemistry Birmingham was founded in 1969 by Professor Tom Whitehead at Queen Elizabeth Medical Centre, Birmingham. In 1969 the Service became known as the UK National External Quality Assessment Service for Clinical Chemistry Birmingham. UK NEQAS Birmingham is part of the University Hospitals Birmingham NHS Foundation Trust.