25-hydroxy vitamin D3


Aakre KM, Ottesend AH, Strandf H, Faareng AL, Alaourh B, Torsvik J, Sylte MS, Marber M, Christensen G, Helge Røsjø H, Omlande T, 2021, Clin Biochem, aop, aop , Biological variation of secretoneurin; a novel cardiovascular biomarker implicated in arrhythmogenesis


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 ug / ug
Overall Analytical Principle Method Chemiluminescence
Number of Subjects 10
Number of Subjects included in BV estimation
Ethinicity Unknown
Age Mean / Median
Age Min 18.0
Age Max 50.0
Age SD
Number of Males 10
Number of Females
State of Well Being
Healthy (excl pregnant)
Study Duration Length 4
Study Duration Units Week
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 10.1
Calculated Confidence Intervals of CVi Lower: 8.14, Upper: 13.09
Estimates of CVg 47.2
Calculated Confidence Intervals of CVg Lower: 32.80, Upper: 83.10
Analytical CV 3.75
Calculated Confidence Intervals of Analytical CV Lower: 3.14, Upper: 4.66
Measurand Mean 14.2
Measurand Min 12.7
Measurand Max 15.8
Measurand SD