Urea

Reference

Reference
Pineda-Tenor D , Laserna-Mendieta EJ, Timon-Zapata J, Rodelgo-Jimenez L, Ramos-Corral R, Recio-Montealegre A and Gomez-Serranillos Reus M, 2013, Clin Chem Lab Med, 51, 851-62 , Biological variation and reference change value of common clinical chemistry and haematologic laboratory analytes in the eldery population

Originally from this reference: Clin Chem Lab Med, Pineda-Tenor D , Laserna-Mendieta EJ, Timon-Zapata J, Rodelgo-Jimenez L, Ramos-Corral R, Recio-Montealegre A and Gomez-Serranillos Reus M, 2013


ID: 0246

Scoring

Total Score

C8

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 C
9. Normality B
10. Variance Homogeneity A
11. ANOVA A
12. CI A
13. No of Results B
14. Concentrations A
15. Total Score C8
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Urea
Unit mmol / L
Overall Analytical Principle Method Enzymatic analysis - Not specified
Number of Subjects 64
Number of Subjects included in BV estimation 64
Ethinicity Unknown
Age Mean / Median
Age Min 80.0
Age Max 92.0
Age SD
Number of Males
Number of Females 64
State of Well Being Healthy (excl pregnant)
Study Duration Length 28
Study Duration Units Day
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Week
Sampling Times Start Time: 08:00
End Time: 10:00
Number of Samples 4
Average Number of Samples Used for BV Estimation 4.0
Average Number of Replicates 1.0
Estimates of CVi 14.7
Calculated Confidence Intervals of CVi Lower: 13.25, Upper: 16.43
Estimates of CVg 20.1
Calculated Confidence Intervals of CVg Lower: 16.66, Upper: 24.84
Analytical CV 3.6
Calculated Confidence Intervals of Analytical CV Lower: 2.82, Upper: 4.97
Measurand Mean 5.0
Measurand Min
Measurand Max
Measurand SD

Coding

Parameter Score
Healthy Population true
Adult Population true
Weekly Samplings true
Reviewed true
Published true
Gender for Meta-Analysis Females
Snomed CT
NPU
LOINC
Comment Elderly
© 2018 - 2019 This website and its content is copyright of EFLM. All rights reserved. Any redistribution or reproduction of part or all of the contents in any form is prohibited other than the following: you may print or download to a local hard disk extracts for your personal and non-commercial use only you may copy the content to individual third parties for their personal use, but only if you acknowledge the website as the source of the material You may not, except with our express written permission, distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system.
European Federation of Clinical Chemistry and Laboratory Medicine
Ms Silvia Cattaneo
Via Carlo Farini 81
20159 Milano - Italy
biologicalvariationdatabase@eflm.eu