Table 2: Selected percentile points with 95% confidence intervals for thyroid stimulating hormone (TSH), free triiodothyronine (FT3), free thyroxine (FT4), total triiodothyronine (TT3), total thyroxine (TT4) thyroglobulin (TGN) by gender, age, race/ethnicity, smoking status, and iodine sufficiency status for reference U.S. population. Data from National Health and Nutrition Examination Survey 2007-2012.

 

Demographic Variable

Percentile

TSH in µIU/mL

FT3 in pg/mL

FT4 in ng/dL

TT3 in ng/dL

TT4 in µg/mL

TGN in ng/mL

Total

5

0.6 (0.6-0.6)

2.7 (2.6-2.7)

0.6 (0.6-0.6)

84.3 (82-86.7)

5.7 (5.6-5.9)

3.3 (3.1-3.5)

10

0.7 (0.7-0.8)

2.8 (2.7-2.8)

0.7 (0.6-0.7)

89.3 (87.3-91.4)

6 (5.9-6.1)

4.1 (3.8-4.4)

25

1 (1-1.1)

3 (2.9-3)

0.7 (0.7-0.7)

101.8 (100.1-103.5

6.6 (6.5-6.7)

6.6 (6.2-7)

75

2.1 (2-2.2)

3.5 (3.4-3.5)

0.9 (0.9-0.9)

129.4 (127.5-131.3

8.3 (8.2-8.4)

16.8 (15.6-18)

90

2.9 (2.7-3)

3.7 (3.7-3.8)

1 (1-1)

145.7 (142.9-148.5

9.3 (9.1-9.5)

27.8 (25.2-30.3)

95

3.4 (3.2-3.7)

3.9 (3.9-4)

1 (1-1)

156.3 (152.6-160)

10.2 (10-10.4)

37.2 (34.7-39.7)

Male

5

0.6 (0.6-0.7)

2.7 (2.6-2.8)

0.6 (0.6-0.6)

84.4 (81.8-87)

5.6 (5.5-5.7)

3.2 (3-3.5)

10

0.8 (0.7-0.8)

2.8 (2.8-2.9)

0.7 (0.6-0.7)

90.3 (86.3-94.4)

6 (5.9-6.1)

4 (3.6-4.4)

25

1.1 (1-1.2)

3.1 (3-3.1)

0.7 (0.7-0.7)

103 (100.5-105.6)

6.5 (6.4-6.6)

6.3 (5.7-7)

75

2.1 (2-2.2)

3.6 (3.5-3.6)

0.9 (0.9-0.9)

131.6 (129.1-134.2

8.2 (8-8.3)

15.4 (14.3-16.5)

90

2.9 (2.7-3.1)

3.8 (3.7-3.9)

1 (1-1)

146.7 (144.1-149.3

9 (8.8-9.2)

22 (20.1-23.8)

95

3.6 (3.3-3.9)

4 (4-4.1)

1 (1-1)

155.4 (152.1-158.6

9.9 (9.4-10.3)

30 (26.3-33.6)

Female

5

0.5 (0.5-0.6)

2.6 (2.5-2.7)

0.6 (0.6-0.6)

84.2 (81-87.3)

5.8 (5.7-5.9)

3.3 (2.9-3.8)

10

0.7 (0.7-0.8)

2.7 (2.6-2.8)

0.7 (0.6-0.7)

88.8 (87.3-90.3)

6.2 (6-6.3)

4.1 (3.5-4.7)

25

1 (1-1)

2.9 (2.8-2.9)

0.7 (0.7-0.7)

99.1 (96.5-101.7)

6.8 (6.7-6.9)

6.8 (6-7.5)

75

2.1 (1.9-2.2)

3.3 (3.3-3.4)

0.9 (0.9-0.9)

125.1 (122.6-127.6

8.5 (8.4-8.6)

19.3 (16.7-21.9)

90

2.8 (2.6-3)

3.6 (3.6-3.7)

1 (0.9-1)

144.3 (140.3-148.3

9.6 (9.3-9.9)

33.3 (30.3-36.3)

95

3.3 (3.1-3.5)

3.8 (3.7-3.9)

1 (1-1.1)

157.7 (149.6-165.7

10.6 (10.2-11)

44.8 (39.7-49.9)

Age: 12-19 Years

5

0.6 (0.5-0.7)

3 (2.8-3.1)

0.6 (0.6-0.7)

99.1 (95-103.2)

5.7 (5.6-5.9)

3 (2.3-3.7)

10

0.7 (0.6-0.8)

3.1 (3-3.2)

0.7 (0.6-0.7)

107 (103.2-110.9)

6.1 (5.9-6.3)

4.1 (3.2-5)

25

1 (0.9-1.1)

3.3 (3.2-3.4)

0.7 (0.7-0.7)

116.5 (113.3-119.7

6.6 (6.4-6.7)

5.9 (5.2-6.6)

75

1.9 (1.8-2.1)

3.8 (3.7-3.9)

0.9 (0.9-0.9)

145.4 (140.2-150.6

8 (7.9-8.1)

13.1 (11.5-14.7)

90

2.6 (2.4-2.8)

4.1 (4-4.2)

1 (0.9-1)

161.3 (154.5-168.2

8.8 (8.5-9.1)

19.1 (16.2-21.9)

95

3.2 (2.9-3.5)

4.3 (4.2-4.4)

1 (1-1.1)

169.7 (156.8-182.7

9.2 (8.8-9.6)

25.5 (20.8-30.3)

Age: 20-64 Years

5

0.6 (0.5-0.6)

2.7 (2.6-2.7)

0.6 (0.6-0.6)

85.4 (83-87.8)

5.7 (5.6-5.9)

3.3 (3-3.6)

10

0.7 (0.7-0.8)

2.8 (2.7-2.8)

0.7 (0.6-0.7)

90 (88.2-91.7)

6 (5.9-6.1)

4 (3.7-4.4)

25

1 (1-1.1)

3 (3-3)

0.7 (0.7-0.7)

101.5 (99.6-103.4)

6.6 (6.5-6.7)

6.7 (6.1-7.2)

75

2 (1.9-2.1)

3.4 (3.4-3.5)

0.9 (0.9-0.9)

127.8 (125.6-130)

8.3 (8.2-8.5)

17.4 (15.7-19.1)

90

2.8 (2.7-2.9)

3.7 (3.6-3.7)

1 (0.9-1)

142.5 (138.6-146.3

9.4 (9.1-9.6)

29.1 (25.9-32.2)

95

3.3 (3-3.6)

3.8 (3.7-3.9)

1 (1-1)

152.9 (148.5-157.3

10.3 (9.9-10.6)

37.5 (31.9-43)

Age: 65+ Years

5

0.7 (0.4-1)

2.5 (2.4-2.5)

0.6 (.-.) *

76 (71.3-80.8)

6 (5.6-6.5)

3.4 (2.5-4.2)

10

0.9 (0.7-1.1)

2.6 (2.5-2.7)

0.7 (0.6-0.7)

80.9 (76.9-85)

6.3 (6.1-6.5)

4.2 (3.7-4.8)

25

1.3 (1.1-1.4)

2.8 (2.7-2.8)

0.7 (0.7-0.8)

91.5 (87-95.9)

6.9 (6.6-7.1)

6.6 (5.6-7.5)

75

2.5 (2.2-2.8)

3.2 (3.1-3.2)

0.9 (0.9-0.9)

119.2 (115.8-122.6

8.6 (8.3-8.8)

17.5 (15.7-19.3)

90

3.4 (2.9-3.8)

3.3 (3.3-3.3)

1 (1-1)

129.6 (125.6-133.7)

9.5 (9-10.1)

31.7 (25.9-37.4)

95

4.1 (3-5.2)

3.4 (3.3-3.5)

1 (1-1.1)

135.1 (127.7-142.5)

10.5 (9.8-11.1)

42.1 (34.6-49.6)

Non-Hispanic White

5

0.6 (.-.)*

2.6 (2.6-2.7)

0.6 (0.6-0.6)

84.3 (81-87.6)

5.7 (5.5-5.9)

3.3 (2.9-3.7)

10

0.7 (.-.)*

2.8 (2.7-2.8)

0.7 (0.6-0.7)

88.7 (86.3-91.2)

6 (5.8-6.1)

4.1 (3.7-4.5)

25

1 (.-.)*

3 (2.9-3)

0.7 (0.7-0.7)

101.1 (98.9-103.3)

6.6 (6.4-6.7)

6.7 (6.3-7.2)

75

1.9 (.-.) *

3.5 (3.4-3.5)

0.9 (0.9-0.9)

128.8 (126.7-130.8)

8.2 (8-8.4)

16.9 (15.2-18.6)

90

2.6 (.-.) *

3.7 (3.6-3.8)

1 (0.9-1)

144.8 (141.2-148.3)

9.1 (8.8-9.3)

28 (24.4-31.5)

95

3.2 (.-.) *

4 (3.9-4)

1 (1-1)

156.5 (150.1-162.9)

9.9 (9.5-10.3)

37.2 (34.3-40.1)

Non-Hispanic Black

5

0.6 (.-.) *

2.7 (2.6-2.7)

0.6 (0.6-0.6)

82.8 (78.2-87.4)

5.7 (5.6-5.9)

4.4 (4-4.9)

10

0.7 (.-.) *

2.8 (2.7-2.8)

0.7 (0.7-0.7)

89.6 (86.1-93.1)

6.1 (5.9-6.3)

5.8 (5.3-6.2)

25

1 (.-.) *

3 (2.9-3)

0.7 (0.7-0.8)

101.5 (98.3-104.7)

6.8 (6.7-6.9)

8.5 (8.1-9)

75

2 (.-.) *

3.4 (3.4-3.5)

0.9 (0.9-0.9)

130.3 (126.3-134.2)

8.5 (8.2-8.8)

22.8 (20.7-24.9)

90

2.8 (.-.) *

3.8 (3.7-3.8)

1 (0.9-1)

148 (143.2-152.9)

9.7 (9.3-10.1)

33.2 (27.9-38.5)

95

3.3 (.-.) *

4 (3.9-4.1)

1 (1-1)

158.9 (148.3-169.5)

10.7 (10-11.3)

47.4 (36.3-58.5)

Hispanic

5

0.7 (.-.) *

2.7 (2.7-2.8)

0.6 (0.6-0.6)

87.4 (83.1-91.7)

5.8 (5.7-5.9)

2.7 (2.1-3.3)

10

0.9 (.-.) *

2.8 (2.8-2.9)

0.7 (0.6-0.7)

93.7 (91.2-96.1)

6.1 (6-6.2)

3.5 (3.1-3.8)

25

1.3 (.-.) *

3 (3-3.1)

0.7 (0.7-0.7)

105.5 (101.9-109)

6.8 (6.6-7)

5.5 (4.9-6)

75

2.5 (.-.) *

3.5 (3.5-3.6)

0.9 (0.9-0.9)

133 (129.1-136.9)

8.5 (8.3-8.7)

13.7 (12.7-14.6)

90

3.4 (.-.) *

3.8 (3.7-3.8)

1 (0.9-1)

149.7 (146.6-152.8)

9.5 (9.1-9.9)

19.5 (17.6-21.4)

95

4.1 (.-.) *

3.9 (3.7-4.1)

1 (1-1.1)

157.7 (153.9-161.5)

10.4 (10-10.8)

25.8 (22-29.5)

Non-smoker

5

0.6 (0.6-0.7)

2.6 (2.6-2.7)

0.6 (0.6-0.6)

84.4 (81.9-87)

5.7 (5.6-5.9)

3.1 (2.8-3.4)

10

0.8 (0.7-0.8)

2.8 (2.7-2.8)

0.7 (0.6-0.7)

89.3 (87.2-91.4)

6.1 (6-6.2)

3.9 (3.7-4.1)

25

1.1 (1-1.1)

3 (2.9-3)

0.7 (0.7-0.7)

101.7 (99.7-103.6)

6.6 (6.5-6.7)

6.1 (5.6-6.7)

75

2.2 (2.1-2.3)

3.5 (3.4-3.5)

0.9 (0.9-0.9)

128.7 (126.3-131.2)

8.3 (8.1-8.4)

15.4 (14.2-16.6)

90

3 (2.8-3.1)

3.7 (3.7-3.8)

1 (1-1)

145.2 (141.8-148.5)

9.3 (9.1-9.5)

24.6 (21.6-27.7)

95

3.6 (3.3-3.8)

3.9 (3.8-4)

1 (1-1)

155.5 (152.2-158.8)

10.1 (9.9-10.3)

36.4 (32.2-40.6)

Smoker

5

0.5 (0.4-0.6)

2.7 (2.6-2.7)

0.6 (0.6-0.6)

84.1 (80-88.3)

5.7 (5.5-5.9)

3.8 (3.2-4.4)

10

0.6 (0.5-0.7)

2.8 (2.7-2.9)

0.7 (0.6-0.7)

89.3 (85.1-93.6)

5.9 (5.8-6.1)

5.2 (4.5-5.9)

25

0.9 (0.8-1)

3 (3-3)

0.7 (0.7-0.7)

102 (98.7-105.4)

6.7 (6.4-6.9)

7.9 (6.8-8.9)

75

1.9 (1.7-2)

3.5 (3.4-3.6)

0.9 (0.9-0.9)

130.4 (127.4-133.4)

8.4 (8.1-8.7)

20.1 (17.4-22.9)

90

2.7 (2.4-3)

3.8 (3.7-3.9)

1 (0.9-1)

146.9 (141.2-152.7)

9.3 (8.8-9.8)

32.4 (29.8-35)

95

2.9 (2.7-3.1)

3.9 (3.8-4.1)

1 (1-1.1)

161.7 (151.6-171.7)

10.4 (9.8-10.9)

39.5 (34.1-44.9)

Iodine Deficient

5

0.6 (0.5-0.7)

2.7 (2.6-2.8)

0.6 (0.6-0.6)

85.9 (83.1-88.7)

5.9 (5.7-6)

3.4 (3-3.7)

10

0.7 (0.6-0.8)

2.8 (2.7-2.9)

0.7 (0.6-0.7)

91.6 (88.3-94.8)

6.1 (6-6.2)

4.4 (3.9-4.8)

25

1 (0.9-1.1)

3 (3-3.1)

0.7 (0.7-0.7)

105 (102.6-107.4)

6.7 (6.6-6.7)

7.1 (6.4-7.8)

75

2 (1.9-2.1)

3.5 (3.4-3.5)

0.9 (0.9-0.9)

130.2 (127.7-132.7)

8.3 (8.1-8.6)

18.3 (16.4-20.2)

90

2.8 (2.6-2.9)

3.7 (3.6-3.8)

1 (0.9-1)

145.6 (141.3-149.9)

9.3 (8.9-9.6)

29.7 (25.9-33.6)

95

3.3 (2.9-3.6)

3.9 (3.8-4)

1 (1-1.1)

154.3 (148.6-160)

10.2 (9.7-10.6)

38.1 (33.6-42.6)

Iodine Replete

5

0.6 (0.5-0.7)

2.6 (2.6-2.7)

0.6 (0.6-0.6)

82.7 (79.4-86.1)

5.7 (5.5-5.9)

3.2 (2.9-3.4)

10

0.8 (0.7-0.8)

2.8 (2.7-2.8)

0.7 (0.6-0.7)

88.4 (86-90.8)

6 (5.9-6.2)

4 (3.7-4.2)

25

1.1 (1-1.1)

3 (2.9-3)

0.7 (0.7-0.7)

100.9 (98.7-103.1)

6.6 (6.5-6.7)

6.3 (5.8-6.9)

75

2.1 (2-2.2)

3.5 (3.4-3.5)

0.9 (0.9-0.9)

129.2 (126.8-131.5)

8.3 (8.2-8.4)

15.4 (14.1-16.8)

90

2.9 (2.7-3.1)

3.8 (3.7-3.8)

1 (0.9-1)

145.7 (142-149.3)

9.3 (9.1-9.5)

25.4 (22.7-28.1)

 

95

3.5 (3.2-3.8)

4 (3.9-4)

1 (1-1)

158.1 (153.4-162.9

10.2 (9.9-10.4)

36 (32-39.9)

 

*Not enough variability in the data to compute confidence intervals.