Related Experiment Video
Updated: Jun 24, 2026

Evaluation of a Point-of-Care Testing Analyzer for Measuring Peripheral Blood Leukocytes
Published on: March 22, 2022
Normal reference value of red blood cell count of Chinese young men and geographical factors
Ge Miao1, Yaping Zhang, Jinwei He
1Department of Geography, Shaanxi Normal University, Xi'an, Shaanxi, China. gemiao@snnu.edu.cn
Aim:
This paper aims at supplying a scientific basis for unifying the normal reference value standard of red blood cell count of Chinese young men.
Methods:
The research is made to study the relationship between the normal reference value of 41,759 examples of red blood cell count of young men and 8 geographical factors in 334 areas in China, which is determined by the microscopical counting method.
Results:
It is found that the correlation of geographical factors and the normal reference value of red blood cell count of young men is quite significant (F = 224.98, P = 0.000). By using the method of stepwise regression analysis, one regression equation is inferred.
Conclusion:
If geographical values are obtained in a certain area, the normal reference value of red blood cell count of young men in this area can be reckoned by using the regression equation. Furthermore, according to the geographical factors, China can be divided into eight districts: Northeast China District, North China District, Shanxi-Shaanxi-Inner Mongolia District, Middle and Lower reaches of the Changjiang River District, Southeast China District, Northwest China District, Southwest China District, and Qinghai-Tibet Plateau District.
Related Concept Videos
Factors Affecting Erythropoiesis
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Erythropoiesis
Disorders of Erythrocytes
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Overview of Hematopoiesis
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...