Vitamin C

Reference

Reference
Gallagher SK, Johnson AK, Milne DB, 1992, Clin Chem, 38, 1449-53 , Short and long term variability of selected indices related to nutritional status. II. Vitamins, lipids, and protein indices

Scoring

Total Score

C8

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

Item Details

Parameter Score
Matrix Serum
Measurand Vitamin C
Unit micromol / L
Overall Analytical Principle Method Spectrophotometry; UV/VISIBLE
Number of Subjects 5
Number of Subjects included in BV estimation 5
Ethinicity Unknown
Age Mean / Median
Age Min 23.0
Age Max 38.0
Age SD
Number of Males
Number of Females 5
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 5
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Week
Sampling Times Start Time: 7.00
End Time: 8.00
Number of Samples 5
Average Number of Samples Used for BV Estimation 5.0
Average Number of Replicates 2.0
Estimates of CVi 15.5
Calculated Confidence Intervals of CVi Lower: 11.66, Upper: 22.64
Estimates of CVg 11.4
Calculated Confidence Intervals of CVg Lower: 2.63, Upper: 32.10
Analytical CV 4.6
Calculated Confidence Intervals of Analytical CV Lower: 3.61, Upper: 6.35
Measurand Mean 108.0
Measurand Min
Measurand Max
Measurand SD

Coding