25-hydroxy vitamin D3

Included in meta analysis


Corte Z, Venta R, 2020, Ann Transl Med, 8(6), 281-91 , Biological variation of metabolic cardiovascular risk factors in haemodialysis patients and healthy individuals


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 A
8. Outlier Analysis A
9. Normality A
10. Variance Homogeneity 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

Item Details

Parameter Score
Matrix Serum
Measurand 25-hydroxy vitamin D3
Unit nmol / L
Overall Analytical Principle Method Immunoassay; Other
Number of Subjects 11
Number of Subjects included in BV estimation
Ethinicity Caucasian
Age Mean / Median
Age Min 21.0
Age Max 50.0
Age SD
Number of Males 3
Number of Females 8
State of Well Being
Healthy (excl pregnant)
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: 08:30
End Time: 10:00
Number of Samples 5
Average Number of Samples Used for BV Estimation
Average Number of Replicates 2.0
Estimates of CVi 12.8
Calculated Confidence Intervals of CVi Lower: 10.48, Upper: 16.31
Estimates of CVg 23.0
Calculated Confidence Intervals of CVg Lower: 15.72, Upper: 39.86
Analytical CV 3.9
Calculated Confidence Intervals of Analytical CV Lower: 3.29, Upper: 4.79
Measurand Mean 62.3
Measurand Min
Measurand Max
Measurand SD