Haemoglobin (Hb)


Borel MJ, Smith SM, Derr J, Beard JL., 1991, Am J Clin Nutr, 54, 729-35 , Day-to-day variation in iron-status indices in healthy men and women


Total Score


Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand A
5. Pre-Analytical A
6. Replicate Analysis A
7. Steady State C
8. Outlier Analysis B
9. Normality B
10. Variance Homogeneity C
12. CI A
13. No of Results C
14. Concentrations A
15. Total Score C7,10,13

Item Details

Parameter Score
Matrix Other
Measurand Haemoglobin (Hb)
Unit g / L
Overall Analytical Principle Method Spectrophotometry; UV/VISIBLE
Number of Subjects 20
Number of Subjects included in BV estimation 20
Ethinicity Unknown
Age Mean / Median
Age Min 21.0
Age Max 42.0
Age SD
Number of Males 10
Number of Females 10
State of Well Being
Healthy (excl pregnant)
Study Duration Length 31
Study Duration Units Day
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Day
Sampling Times Start Time: 07.30
End Time: 12.00
Number of Samples 31
Average Number of Samples Used for BV Estimation 30.25
Average Number of Replicates 3.0
Estimates of CVi 4.2
Calculated Confidence Intervals of CVi Lower: 3.96, Upper: 4.47
Estimates of CVg
Calculated Confidence Intervals of CVg Lower: 0.00, Upper:
Analytical CV 1.8
Calculated Confidence Intervals of Analytical CV Lower: 1.73, Upper: 1.88
Measurand Mean 142.0
Measurand Min
Measurand Max
Measurand SD