Table 5: 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

2.5

0.5 (0.4-0.5)

2.5 (2.5-2.6)

0.6 (0.6-0.6)

78.9 (75.8-82.1)

5.5 (5.4-5.6)

2.5 (2.3-2.8)

50

1.5 (1.4-1.6)

3.2 (3.2-3.2)

0.8 (0.8-0.8)

115.3 (113.4-117.3

7.4 (7.3-7.5)

10.4 (9.7-11.2)

97.5

4 (3.6-4.5)

4.1 (4-4.2)

1.1 (1.1-1.1)

169.3 (161-177.7)

11 (10.6-11.4)

48.4 (43.5-53.2)

Male

2.5

0.5 (0.4-0.6)

2.6 (2.5-2.7)

0.6 (0.6-0.6)

78 (72.8-83.1)

5.4 (5.3-5.6)

2.5 (2.2-2.9)

50

1.5 (1.4-1.6)

3.3 (3.3-3.3)

0.8 (0.8-0.8)

116.9 (114-119.9)

7.2 (7.1-7.3)

10 (9.2-10.7)

97.5

4.1 (3.1-5.1)

4.2 (4.1-4.3)

1.1 (1-1.1)

163.6 (159.6-167.7

10.5 (10.1-10.9)

37.6 (29.9-45.3)

Female

2.5

0.4 (0.4-0.5)

2.4 (2.3-2.5)

0.6 (0.6-0.6)

80 (76.7-83.3)

5.7 (5.4-6)

2.5 (2-3.1)

50

1.5 (1.4-1.6)

3.1 (3.1-3.1)

0.8 (0.8-0.8)

113.1 (111.1-115)

7.6 (7.5-7.7)

11 (9.7-12.4)

97.5

3.9 (3.4-4.4)

4 (3.9-4)

1.1 (1.1-1.1)

171.5 (162.8-180.1

11.4 (10.9-11.8)

52 (35.9-68.1)

Age: 12-19 Years

2.5

0.5 (0.3-0.6)

2.8 (.-.)

0.6 (.-.)

94.5 (88.7-100.3)

5.6 (5.4-5.8)

2.5 (1.9-3.1)

50

1.5 (1.4-1.6)

3.6 (3.5-3.7)

0.8 (0.8-0.8)

130.3 (126.7-133.9

7.2 (7-7.4)

8.8 (8-9.7)

97.5

3.5 (3.3-3.7)

4.4 (4.1-4.8)

1.1 (1-1.2)

183.6 (163.1-204.2

10 (9.6-10.3)

29.8 (23.1-36.5)

Age: 20-64 Years

2.5

0.5 (0.4-0.5)

2.6 (2.5-2.7)

0.6 (0.6-0.6)

80.9 (77.2-84.5)

5.5 (5.3-5.7)

2.5 (2.2-2.9)

50

1.4 (1.4-1.5)

3.2 (3.2-3.2)

0.8 (0.8-0.8)

114.6 (112.3-116.9

7.4 (7.2-7.5)

10.8 (9.9-11.7)

97.5

3.9 (3.4-4.3)

4 (3.9-4.1)

1.1 (1-1.1)

166.3 (154.7-177.9

11 (10.5-11.5)

48.4 (40.3-56.6)

Age: 65+ Years

2.5

0.3 (.-.) *

2.4 (2.3-2.4)

0.6 (.-.)*

68.5 (59.7-77.4)

5.5 (.-.)*

2.5 (.-.)*

50

1.8 (1.6-2)

2.9 (2.9-3)

0.8 (0.8-0.8)

105.7 (102.5-108.9

7.6 (7.4-7.8)

10.4 (8.9-11.9)

97.5

5.4 (.-.)*

3.5 (.-.)*

1.1 (1-1.2)

147.6 (137.6-157.6

11.5 (10.7-12.2)

57.1 (29.4-84.7)

Non-Hispanic White

2.5

0.5 (0.4-0.6)

2.5 (2.4-2.6)

0.6 (0.6-0.6)

78.8 (74.6-83)

5.4 (5.2-5.6)

2.7 (2.3-3)

50

1.6 (1.5-1.7)

3.2 (3.1-3.2)

0.8 (0.8-0.8)

115.3 (112.9-117.7

7.3 (7.1-7.5)

10.5 (9.6-11.4)

97.5

4.3 (3.2-5.4)

4.1 (4-4.2)

1.1 (1-1.1)

169.6 (159.8-179.4

10.8 (10.2-11.4)

46.4 (40.4-52.4)

Non-Hispanic Black

2.5

0.4 (0.4-0.5)

2.6 (2.5-2.7)

0.6 (0.6-0.6)

76.3 (72.7-79.9)

5.5 (5.3-5.6)

3.6 (3.1-4.1)

50

1.2 (1.2-1.3)

3.2 (3.2-3.2)

0.8 (0.8-0.8)

114.4 (110.9-117.9

7.6 (7.4-7.8)

14.2 (12.7-15.8)

97.5

3.6 (3.3-3.9)

4.2 (4.1-4.3)

1.1 (1-1.2)

182.3 (162.7-201.9

11.4 (10.6-12.2)

67 (45.6-88.3)

Hispanic

2.5

0.5 (0.5-0.6)

2.7 (2.6-2.8)

0.6 (0.6-0.6)

82.9 (75.7-90)

5.6 (5.5-5.8)

1.9 (0.8-2.9)

50

1.5 (1.4-1.5)

3.3 (3.2-3.3)

0.8 (0.8-0.8)

117.1 (113.6-120.7

7.5 (7.3-7.8)

8.8 (8.2-9.4)

97.5

4.2 (3.6-4.8)

4.2 (4-4.3)

1.1 (1.1-1.1)

164.9 (154.1-175.8

11.2 (10.7-11.8)

31.9 (20-43.9)

Non-smoker

2.5

0.5 (0.4-0.6)

2.5 (2.4-2.6)

0.6 (0.6-0.6)

78.5 (74.9-82.1)

5.6 (5.4-5.7)

2.3 (1.9-2.8)

50

1.6 (1.5-1.6)

3.2 (3.2-3.2)

0.8 (0.8-0.8)

115.2 (113.1-117.2

7.3 (7.2-7.5)

9.7 (9-10.4)

97.5

4.3 (3.7-5)

4.1 (4-4.2)

1.1 (1.1-1.1)

166.5 (160.8-172.2

10.9 (10.5-11.3)

46.5 (41.3-51.8)

Smoker

2.5

0.4 (0.3-0.5)

2.6 (2.4-2.8)

0.6 (0.6-0.6)

80.3 (75.7-84.9)

5.4 (5.1-5.8)

3 (2.4-3.6)

50

1.3 (1.2-1.4)

3.2 (3.2-3.3)

0.8 (0.8-0.8)

115.9 (111.6-120.2

7.5 (7.3-7.7)

12.8 (11.4-14.3)

97.5

3.3 (2.9-3.7)

4.1 (3.9-4.4)

1.1 (1-1.1)

175.5 (162.6-188.5

11 (10.1-11.9)

50.9 (44.9-56.9)

Iodine Deficient

2.5

0.5 (0.3-0.6)

2.6 (2.5-2.7)

0.6 (0.6-0.6)

83.3 (78.7-88)

5.6 (5.4-5.9)

2.7 (2.3-3.2)

50

1.4 (1.3-1.5)

3.2 (3.2-3.3)

0.8 (0.8-0.8)

116.5 (114.1-118.8

7.5 (7.3-7.7)

11.3 (10-12.6)

97.5

3.8 (3.4-4.3)

4.1 (4-4.2)

1.1 (1.1-1.1)

163.7 (150.8-176.6

10.7 (10.2-11.2)

49.3 (37.6-61)

Iodine Replete

2.5

0.5 (0.4-0.5)

2.5 (2.4-2.6)

0.6 (0.6-0.6)

77.2 (73.6-80.8)

5.4 (5.2-5.6)

2.5 (2-2.9)

50

1.5 (1.5-1.6)

3.2 (3.1-3.2)

0.8 (0.8-0.8)

114.5 (112.3-116.7

7.4 (7.2-7.5)

10 (9.3-10.8)

 

97.5

4.1 (3.4-4.9)

4.1 (4-4.2)

1.1 (1-1.1)

169.9 (159.7-180.2

11 (10.5-11.4)

48.4 (41-55.7)

 

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