Testosterone level

Reference

Reference
Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998, Clin Chem Lab Med, 36, 485-91 , Biological day-to-day variation and daytime changes of testosterone, follitropin, lutropin and oestradiol-17β in healthy men

Originally from this reference: Clin Chem Lab Med, Ahokoski O, Virtanen A, Huupponene R, Scheinin H, Salminen E, Kairisto V, Irjala K, 1998


ID: 0170

Scoring

Total Score

C4,7,8,10,13

Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand C
5. Pre-Analytical A
6. Replicate Analysis B
7. Steady State C
8. Outlier Analysis C
9. Normality A
10. Variance Homogeneity C
11. ANOVA A
12. CI A
13. No of Results C
14. Concentrations B
15. Total Score C4,7,8,10,13
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Testosterone level
Unit nmol / L
Overall Analytical Principle Method Unknown
Number of Subjects 31
Number of Subjects included in BV estimation 31
Ethinicity Unknown
Age Mean / Median 23.0
Age Min 20.0
Age Max 34.0
Age SD
Number of Males 31
Number of Females 0
State of Well Being Healthy (excl pregnant)
Study Duration Length 1
Study Duration Units Day
Sampling Intervals, e.g. X sample(s) per Interval Unit 4
Interval Units Day
Sampling Times Start Time: 08.00
End Time: 20.00
Number of Samples 4
Average Number of Samples Used for BV Estimation 4.0
Average Number of Replicates 1.0
Estimates of CVi 24.2
Calculated Confidence Intervals of CVi Lower: 20.60, Upper: 28.56
Estimates of CVg 26.1
Calculated Confidence Intervals of CVg Lower: 19.38, Upper: 36.39
Analytical CV 6.9
Calculated Confidence Intervals of Analytical CV Lower: 4.95, Upper: 11.39
Measurand Mean
Measurand Min
Measurand Max
Measurand SD

Coding

Parameter Score
Healthy Population true
Adult Population true
Weekly Samplings false
Reviewed true
Published true
Gender for Meta-Analysis Males
Snomed CT
NPU
LOINC
Comment Within day variation