Urea

Reference

Reference
Loh TP and Metz MP, 2015, Am J Clin Pathol, 143, 683-93 , Indirect estimation of pediatric between-individual biological variation data from 22 common serum biochemistries

Scoring

Total Score

C4,5,6,7,10,12,13

Parameter Score
1. Scale A
2. Study Population A
3. Samples B
4. Measurand C
5. Pre-Analytical C
6. Replicate Analysis C
7. Steady State C
8. Outlier Analysis B
9. Normality B
10. Variance Homogeneity C
11. ANOVA B
12. CI C
13. No of Results C
14. Concentrations B
15. Total Score C4,5,6,7,10,12,13
Comment 2 samples per subject; time of sample collection not given

Item Details

Parameter Score
Matrix Serum
Measurand Urea
Unit mmol / L
Overall Analytical Principle Method Unknown
Number of Subjects 1882
Number of Subjects included in BV estimation 1882
Ethinicity Unknown
Age Mean / Median
Age Min 0.0
Age Max 19.0
Age SD
Number of Males 1882
Number of Females
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 12
Study Duration Units Month
Sampling Intervals, e.g. X sample(s) per Interval Unit
Interval Units Week
Sampling Times Start Time:
End Time:
Number of Samples 2
Average Number of Samples Used for BV Estimation 2.0
Average Number of Replicates
Estimates of CVi 12.5
Calculated Confidence Intervals of CVi Lower: , Upper:
Estimates of CVg 27.3
Calculated Confidence Intervals of CVg Lower: 0.00, Upper:
Analytical CV
Calculated Confidence Intervals of Analytical CV Lower: , Upper:
Measurand Mean
Measurand Min
Measurand Max
Measurand SD

Coding