Reference
Cavalier E, Lukas P, Bottani M, Aarsand A.K., Ceriotti F, Coşkun A, Diaz-Garzón J, Fernàndez-Calle P, Guerra E, 10 & M. Locatelli, Sandberg S, Carobene A, & on behalf of the European Federation of Clinical Chemistry and Laboratory Medicine Working Group on Biological Variation and IOF-IFCC Committee on Bone Metabolism, 2020, Osteoporos Int, 31(8), 1461-1470 , European Biological Variation Study (EuBIVAS): within- and between-subject biological variation estimates of β-isomerized C-terminal telopeptide of type I collagen (β-CTX), N-terminal propeptide of type I collagen (PINP), osteocalcin, intact fibroblast growth factor 23 and uncarboxylated-unphosphorylated matrix-Gla protein—a cooperation between the EFLM Working Group on Biological Variation and the International Osteoporosis Foundation-International Federation of Clinical Chemistry Committee on Bone Metabolism
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 |
Parameter | Score |
---|---|
Matrix | Serum |
Measurand | Osteocalcin |
Unit | ug / L |
Overall Analytical Principle Method | Chemiluminescence |
Number of Subjects | 91 |
Number of Subjects included in BV estimation | 91 |
Ethinicity | Caucasian |
Age Mean / Median | |
Age Min | 21.0 |
Age Max | 69.0 |
Age SD | |
Number of Males | 38 |
Number of Females | 53 |
State of Well Being |
Healthy (excl pregnant)
|
Diseases | |
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:
8:00
End Time: 10:00 |
Number of Samples | 10 |
Average Number of Samples Used for BV Estimation | 10.0 |
Average Number of Replicates | 2.0 |
Estimates of CVi | 8.9 |
Calculated Confidence Intervals of CVi | Lower: 8.47, Upper: 9.37 |
Estimates of CVg | 32.6 |
Calculated Confidence Intervals of CVg | Lower: 28.44, Upper: 38.17 |
Analytical CV | 2.3 |
Calculated Confidence Intervals of Analytical CV | Lower: 2.20, Upper: 2.41 |
Measurand Mean | 22.5 |
Measurand Min | 22.1 |
Measurand Max | 23.0 |
Measurand SD |