Table 2.

Serum TSH (geometric mean and upper and lower limits of 95% probability interval) in the different age groups for the total, the disease-free, and the reference populations.1

Age, yearsTSH, mIU/L
Total populationDisease-free populationReference population
Mean95% probability interval2Mean95% probability interval2Mean95% probability interval2
Lower limitUpper limitLower limitUpper limitLower limitUpper limit
18–241.460.405.391.490.534.231.470.544.03
25–291.480.425.151.500.504.491.420.563.60
30–341.440.355.831.460.395.501.440.553.78
35–391.420.345.891.430.375.581.350.503.61
40–441.370.296.481.400.355.631.350.473.82
45–491.310.218.061.380.394.801.310.463.70
50–541.280.266.301.310.325.381.260.364.45
55–591.350.228.171.390.296.621.340.473.82
60–641.310.218.311.370.296.501.280.374.47
65–691.200.178.321.230.217.111.160.255.53
70–741.260.188.641.270.217.861.140.225.82
75–791.120.167.681.160.216.341.100.244.97
80–841.090.167.621.150.226.091.070.225.26
>851.070.138.991.080.148.331.070.138.66
All1.290.227.431.330.296.151.260.344.66