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Dr. Tsubokura's Radiation Lecture Vol.118

Author: Masaharu Tsubokura M.D., PhD.

Editors: Akihiko Ozaki M.D., PhD., Yuki Senoo

235. The reference value range should be used as just a guide

   A blood test at medical check-ups and the hospital indicates the reference values for each test component. The blood test’s results present the reference values in a range "from XX to XX" for each test component, such as anemia, liver, or kidney panels. People often worry when their results are not within these reference values.


   However, none of us is identical to each other; hence, each person will have different blood test results. For example, although most people's height and weight are close to the average, some people have excessively or slightly high or low height and weight.

   For this reason, a reference range is the set of values within which the majority of the healthy population falls (95/100 people—that is, a 95% prediction interval).


   Therefore, even for those who are healthy, 5 ou