Reference
Midttun Ø, Townsend MK, Nyga ̊rd O, Tworoger SS, Brennan P,Johansson M, Ueland PM, 2014, J Nutr, 144(5), 784-90 , Most Blood Biomarkers Related to Vitamin Status, One-Carbon Metabolism, and the Kynurenine Pathway Show Adequate Preanalytical Stability and Within-Person Reproducibility to Allow Assessment of Exposure or Nutritional Status in Healthy Women and Cardiovascular Patients
| Parameter | Score |
|---|---|
| 1. Scale | A |
| 2. Study Population | D |
| 3. Samples | NA |
| 4. Measurand | NA |
| 5. Pre-Analytical | NA |
| 6. Replicate Analysis | NA |
| 7. Steady State | NA |
| 8. Outlier Analysis | NA |
| 9. Normality | NA |
| 10. Variance Homogeneity | NA |
| 11. ANOVA | NA |
| 12. CI | NA |
| 13. No of Results | NA |
| 14. Concentrations | NA |
| 15. Total Score | D2 |
| Comment | no information about health status of subjects is provided |
| Parameter | Score |
|---|---|
| Matrix | Plasma |
| Measurand | 25-hydroxy vitamin D3 |
| Unit | nmol / L |
| Overall Analytical Principle Method | Chromatography; HPLC |
| Number of Subjects | 40 |
| Number of Subjects included in BV estimation | 40 |
| Ethinicity | Caucasian |
| Age Mean / Median | 62.0 |
| Age Min | 51.0 |
| Age Max | 68.0 |
| Age SD | |
| Number of Males | 0 |
| Number of Females | 40 |
| State of Well Being |
Healthy (excl pregnant)
|
| Diseases | |
| Study Duration Length | 2 |
| Study Duration Units | Year |
| Sampling Intervals, e.g. X sample(s) per Interval Unit | 2 |
| Interval Units | Year |
| Sampling Times | Start Time:
End Time: |
| Number of Samples | 2 |
| Average Number of Samples Used for BV Estimation | 2.0 |
| Average Number of Replicates | 1.0 |
| Estimates of CVi | 14.0 |
| Calculated Confidence Intervals of CVi | Lower: , Upper: |
| Estimates of CVg | 22.0 |
| Calculated Confidence Intervals of CVg | Lower: , Upper: |
| Analytical CV | |
| Calculated Confidence Intervals of Analytical CV | Lower: , Upper: |
| Measurand Mean | |
| Measurand Min | |
| Measurand Max | |
| Measurand SD |