Summary
Hematological parameters including platelet counts, etc. were determined in 1,140
healthy subjects living in four cities: Suzhou (Jiangsu Province), Chengdu (Sichuan
Province) and Harbin (Heilongjang Province) in China, and Kobe in Japan. Then, the
reference intervals for platelet counts were calculated and compared. The reference
interval for platelet count of subjects aged between 18 and 60 years was 60-259 ×
109/L in Suzhou and 52–202 × 109/L in Chengdu, and subjects with platelet counts of 100 × 109/L or less accounted for about 30% of the subjects examined in these cities. The reference
intervals in Harbin and Kobe were within the range of 150–350 × 109/L, and no subject having a platelets count of 100 × 109/L or less was detected. Mean platelet volume (MPV) determined concurrently was negatively
correlated with platelet count, and the reference intervals for MPV in Chengdu and
Suzhou were higher than those in Harbin and Kobe.
Keywords
Platelet count - reference interval - MPV - bleeding time - China