Aarsand AK, Diaz-Garzón J, Fernández-Calle P, et al, 2018, Clin Chem, 64(9), 1380-93 , The EuBIVAS: within- and between-subject biological variation data for electrolytes, lipids, urea, uric acid, total protein, total bilirubin, direct bilirubin and glucose


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 Magnesium
Unit mg / dL
Overall Analytical Principle Method Ion-selective electrode
Number of Subjects 53
Number of Subjects included in BV estimation 53
Ethinicity Caucasian
Age Mean / Median
Age Min 21.0
Age Max 69.0
Age SD
Number of Males 0
Number of Females 53
State of Well Being
Healthy (excl pregnant)
Study Duration Length 10
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Week
Sampling Times Start Time: 08:00
End Time: 10:00
Number of Samples 10
Average Number of Samples Used for BV Estimation 9.4
Average Number of Replicates 1.99
Estimates of CVi 3.04
Calculated Confidence Intervals of CVi Lower: 2.78, Upper: 3.33
Estimates of CVg 6.16
Calculated Confidence Intervals of CVg Lower: 5.14, Upper: 7.65
Analytical CV 2.48
Calculated Confidence Intervals of Analytical CV Lower: 2.33, Upper: 2.65
Measurand Mean 2.01
Measurand Min 2.0
Measurand Max 2.03
Measurand SD