Testosterone - free


Ooi LSM, Panesar NS, Masarei JRL, 1995, Clin Chim Acta, 236, 87-92 , Within- and between-subject variation in, and associations between, serum concentrations and urinary excretion of testosterone and estradiol in Chinese men


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 B
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity C
12. CI A
13. No of Results A
14. Concentrations A
15. Total Score C8,10

Item Details

Parameter Score
Matrix 24 Hour Urine
Measurand Testosterone - free
Unit nmol / _
Overall Analytical Principle Method Immunoassay; RIA
Number of Subjects 46
Number of Subjects included in BV estimation 46
Ethinicity Asian
Age Mean / Median
Age Min 19.0
Age Max 53.0
Age SD
Number of Males 46
Number of Females 0
State of Well Being
Healthy (excl pregnant)
Study Duration Length 3
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
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 2.0
Estimates of CVi 51.7
Calculated Confidence Intervals of CVi Lower: 42.91, Upper: 65.00
Estimates of CVg
Calculated Confidence Intervals of CVg Lower: 0.00, Upper:
Analytical CV 5.5
Calculated Confidence Intervals of Analytical CV Lower: 4.81, Upper: 6.43
Measurand Mean
Measurand Min 0.47
Measurand Max 3.1
Measurand SD