Haematocrit (Hct)


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


Total Score


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 C
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity A
12. CI A
13. No of Results A
14. Concentrations A
15. Total Score C7,8

Item Details

Parameter Score
Matrix Whole Blood EDTA
Measurand Haematocrit (Hct)
Unit L / L
Overall Analytical Principle Method Flow cytometry - Laser
Number of Subjects 64
Number of Subjects included in BV estimation 64
Ethinicity Unknown
Age Mean / Median
Age Min 80.0
Age Max 89.0
Age SD
Number of Males 0
Number of Females 64
State of Well Being
Healthy (excl pregnant)
Study Duration Length 4
Study Duration Units Week
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 3.25
Average Number of Replicates
Estimates of CVi 2.6
Calculated Confidence Intervals of CVi Lower: 2.33, Upper: 2.94
Estimates of CVg 5.2
Calculated Confidence Intervals of CVg Lower: 0.00, Upper: 6.36
Analytical CV 0.3
Calculated Confidence Intervals of Analytical CV Lower: 0.23, Upper: 0.44
Measurand Mean 0.38
Measurand Min
Measurand Max
Measurand SD