Haemoglobin A1c (HbA1c)


Xue L, Liang H and Jiang X , 2012, Clin Lab, 58, 481-8 , Circannual temperature-related variation in hemoglobin A1c is unlikely to affect its use as a diagnostic test for type 2 diabetes


Total Score


Parameter Score
1. Scale B
2. Study Population A
3. Samples C
4. Measurand B
5. Pre-Analytical B
6. Replicate Analysis C
7. Steady State C
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity C
12. CI C
13. No of Results C
14. Concentrations A
15. Total Score C3,6,7,8,10,11,12,13
Comment no analytical variation. C3,6,7,8,10,12,13

Item Details

Parameter Score
Matrix Whole Blood EDTA
Measurand Haemoglobin A1c (HbA1c)
Unit ug / ug
Overall Analytical Principle Method Spectrophotometry; UV/VISIBLE
Number of Subjects 1156
Number of Subjects included in BV estimation 1156
Ethinicity Unknown
Age Mean / Median
Age Min
Age Max
Age SD
Number of Males 720
Number of Females 436
State of Well Being
Non-healthy (excl pregnant)
Study Duration Length 5 months
Study Duration Units Month
Sampling Intervals, e.g. X sample(s) per Interval Unit
Interval Units Month
Sampling Times Start Time:
End Time:
Number of Samples 5
Average Number of Samples Used for BV Estimation 5.0
Average Number of Replicates 0.0
Estimates of CVi
Calculated Confidence Intervals of CVi Lower: , Upper:
Estimates of CVg 15.14
Calculated Confidence Intervals of CVg Lower: 0.00, Upper:
Analytical CV
Calculated Confidence Intervals of Analytical CV Lower: , Upper:
Measurand Mean 7.27
Measurand Min 7.2
Measurand Max 7.33
Measurand SD