Haemoglobin A1c (NGSP)

Included in meta analysis


Kilpatrick ES, Maylor PV and Keevil BG, 1998, Diabetes Care, 21, 261-4 , Biological variation of glycated hemoglobin. Implications for diabetes screening and monitoring


Total Score


Parameter Score
1. Scale B
2. Study Population A
3. Samples A
4. Measurand B
5. Pre-Analytical A
6. Replicate Analysis B
7. Steady State B
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity C
12. CI C
13. No of Results A
14. Concentrations A
15. Total Score C8,10,12
Comment scale:%, CVA with CQI

Item Details

Parameter Score
Matrix Whole Blood EDTA
Measurand Haemoglobin A1c (NGSP)
Unit % / _
Overall Analytical Principle Method Spectrophotometry; UV/VISIBLE
Number of Subjects 12
Number of Subjects included in BV estimation 12
Ethinicity Caucasian
Age Mean / Median
Age Min
Age Max
Age SD
Number of Males
Number of Females
State of Well Being
Healthy (excl pregnant)
Study Duration Length 5,4 months
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit
Interval Units Week
Sampling Times Start Time:
End Time:
Number of Samples 10
Average Number of Samples Used for BV Estimation 10.0
Average Number of Replicates 0.0
Estimates of CVi 1.9
Calculated Confidence Intervals of CVi Lower: 0.00, Upper: 2.66
Estimates of CVg 6.8
Calculated Confidence Intervals of CVg Lower: 4.84, Upper: 11.29
Analytical CV 2.2
Calculated Confidence Intervals of Analytical CV Lower: 1.58, Upper: 3.63
Measurand Mean 4.01
Measurand Min
Measurand Max
Measurand SD