Hongo T, Suzuki T et al, 1993, J Nutr Sci Vitaminol , 39, 33-46 , Diurnal variation of plasma minerals and trace elements in a group of Japanese male adults


Total Score


Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand A
5. Pre-Analytical A
6. Replicate Analysis C
7. Steady State B
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 C6,8,10,11,12,13

Item Details

Parameter Score
Matrix Plasma
Measurand Iron
Unit ug / mL
Overall Analytical Principle Method Spectrophotometry; Atomic absorption
Number of Subjects 10
Number of Subjects included in BV estimation 10
Ethinicity Asian
Age Mean / Median 28.3
Age Min 23.0
Age Max 39.0
Age SD
Number of Males 10
Number of Females
State of Well Being
Healthy (excl pregnant)
Study Duration Length 24
Study Duration Units Hour
Sampling Intervals, e.g. X sample(s) per Interval Unit 3
Interval Units Hour
Sampling Times Start Time: 7:30
End Time: 7:30
Number of Samples 7
Average Number of Samples Used for BV Estimation 7.0
Average Number of Replicates
Estimates of CVi 29.7
Calculated Confidence Intervals of CVi Lower: , Upper:
Estimates of CVg 25.2
Calculated Confidence Intervals of CVg Lower: , Upper:
Analytical CV
Calculated Confidence Intervals of Analytical CV Lower: , Upper:
Measurand Mean
Measurand Min
Measurand Max
Measurand SD