25-hydroxy vitamin D3

Included in meta analysis

Reference

Reference
Cokluk E, Akbay HI, Alp HH, 2021, Clin Lab, 67(9), , Biological Variation of Iron, Transferrin, Ferritin, Folate, Vitamin B12 and 25-OH Vitamin D in Healthy Individuals

Scoring

Total Score

A1,2,3,4,5,6,7,8,9,10,11,12,13,14

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 A
8. Outlier Analysis A
9. Normality A
10. Variance Homogeneity A
11. ANOVA A
12. CI A
13. No of Results A
14. Concentrations A
15. Total Score A1,2,3,4,5,6,7,8,9,10,11,12,13,14
Comment

Item Details

Parameter Score
Matrix Serum
Measurand 25-hydroxy vitamin D3
Unit ug / ug
Overall Analytical Principle Method Chemiluminescence
Number of Subjects 21
Number of Subjects included in BV estimation
Ethinicity Caucasian
Age Mean / Median
Age Min 18.0
Age Max 50.0
Age SD
Number of Males 10
Number of Females 11
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 1
Study Duration Units Month
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Week
Sampling Times Start Time: 8:30
End Time: 10:00
Number of Samples 5
Average Number of Samples Used for BV Estimation 5.0
Average Number of Replicates 2.0
Estimates of CVi 8.2
Calculated Confidence Intervals of CVi Lower: 7.02, Upper: 9.78
Estimates of CVg 54.9
Calculated Confidence Intervals of CVg Lower: 42.17, Upper: 78.55
Analytical CV 3.4
Calculated Confidence Intervals of Analytical CV Lower: 3.00, Upper: 3.93
Measurand Mean
Measurand Min
Measurand Max
Measurand SD

Coding