EFLM Biological Varation Database : BIVAC Minimum Data Set for g-glutamyl transferase activity EFLM Biological Variation

g-glutamyl transferase activity

Reference

Bailey D, Bevilacqua V, Colantonio DA, Pasic MD, Perumal N, Chan MK and Adeli K, 2014, Clin Chem, 60, 518-29 , Pediatric within-day biological variation and quality spcifications for 38 biochemical markers in the CALIPER cohort

Scoring

Total Score

C_10,13

Parameter	Score
1. Scale	A
2. Study Population	A
3. Samples	A
4. Measurand	A
5. Pre-Analytical	A
6. Replicate Analysis	B
7. Steady State	B
8. Outlier Analysis	B
9. Normality	B
10. Variance Homogeneity	C
11. ANOVA	B
12. CI	A
13. No of Results	C
14. Concentrations	A
15. Total Score	C_10,13
Comment	B

Item Details

Parameter	Score
Matrix	Serum
Measurand	g-glutamyl transferase activity
Unit	U / L
Overall Analytical Principle Method	Enzymatic analysis - Not specified
Number of Subjects	29
Number of Subjects included in BV estimation	29
Ethinicity	Caucasian
Age Mean / Median
Age Min	4.0
Age Max	18.0
Age SD
Number of Males	16
Number of Females	13
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: 09:30 End Time: 17:30
Number of Samples	4
Average Number of Samples Used for BV Estimation	4.0
Average Number of Replicates	1.0
Estimates of CVi	2.7
Calculated Confidence Intervals of CVi	Lower: 2.12, Upper: 3.25
Estimates of CVg	18.7
Calculated Confidence Intervals of CVg	Lower: 14.87, Upper: 25.17
Analytical CV	1.1
Calculated Confidence Intervals of Analytical CV	Lower: 0.78, Upper: 1.87
Measurand Mean	18.0
Measurand Min
Measurand Max
Measurand SD

Coding

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