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Table 2 Influence of fasting and calorie intake on TSH level

From: Effects of calorie intake and sampling time on thyroid stimulating hormone concentration

Median (P25, P75)

Diet intake group

Glucose intake group

Fasting group

P value

TSH7am (mU/L)

2.3 (1.4, 2.9)

2.2 (1.5, 3.1)

1.9 (1.3, 3)

0.664

TSH9am (mU/L)

1.5 (1, 2.1) ***

1.4 (0.9, 2.1) ***

1.7 (1.2, 3.1) ***

0.094

TSH variation (mU/L)

-0.71 (-1.02, -0.36) ###

-0.73 (-1.05, -0.44) &&&

-0.1 (-0.26, 0.04)

 < 0.001

TSH variation rate (%)

-32.4 (-39.3, -25.3) ###

-31.5 (-40.7, -24) &&&

-5.2 (-16.1, 1.6)

 < 0.001

  1. Variables were presented as medians (P25, P75) and compared by Kruskal–Wallis test among groups
  2. *** P < 0.001, comparing withTSH7am; ### P < 0.001, comparing with the fasting group; &&& P < 0.001, comparing with the fasting group
  3. TSH variation = TSH9am- TSH7am; TSH variation rate = (TSH9am- TSH7am)/ TSH7am;