Related Experiment Video
Updated: Jul 21, 2026

Evaluation of a Point-of-Care Testing Analyzer for Measuring Peripheral Blood Leukocytes
Published on: March 22, 2022
Standardization of laboratory data and establishment of reference intervals in the Fukuoka Prefecture: a Japanese
S Kinoshita1, M Toyofuku, H Iida
1The Association of Five Hospitals in Fukuoka Prefecture, Fukuoka, Japan. kinosita@cclm.med.kyushu-ac.jp
Abstract:
Standardization of 22 clinical chemistry analytes and five serum protein constituents has been performed in the Fukuoka Prefecture, which has a population of approximately five million. The standardization project was established to determine reference intervals for these analytes by educating physicians, medical technologists and staff of medical institutions, and by daily or monthly monitoring the use of common control samples through e-mail. Standardization extended to 97% of the institutions in the prefecture. Results for 14 of the 22 clinical chemistry analytes have become highly reliable and differences between institutions decreased. Standardization of other analytes is now in progress. Regional collaboration based on international guidelines led to a significant improvement in interlaboratory comparability. Areas where further improvements are needed have been identified.
Related Concept Videos
Interval Level of Measurement
Data measured using the interval scale are similar to ordinal level data because they have a definite arrangement. However, in the interval level of measurement, the differences between data values are meaningful even though the data does not have a starting point.
Temperature is measured using the interval scale. It is measurable data, and the difference between the...
Ratio Level of Measurement
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated. For...
Measurement of Bioavailability: Pharmacokinetic Methods
Measurement of Bioavailability: Pharmacodynamic Methods
Bioequivalence Data: Statistical Interpretation
Statistical Methods for Analyzing Epidemiological Data

