酶法(37℃):
臍帶:1.17~2.60mmol/L (45~100mg/dl);
新生兒:1.37~3.50mmol/L (52~135mg/dl);
嬰兒:1.82~4.55mmol/L (70~175mg/dl);
兒童:3.12~5.20mmol/L (120~200mg/dl);
青年:3.12~5.46mmol/L (120~210mg/dl);
成人:2.9~6.00mmol/L (110~230mg/dl)。