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Table 2 Descriptive statistics of PFAS concentrations in maternal plasma and thyroid hormone concentrations in cord plasma

From: Prenatal exposure to perfluoroalkyl substances and thyroid hormone concentrations in cord plasma in a Chinese birth cohort

 

>LOD (%)

Percentiles

GM (SD)

5th

25th

50th

75th

95th

PFAS (N = 300, ng/mL)

PFHxS

100

1.29

2.04

2.67

3.40

5.48

2.66 (1.51)

PFOS

100

4.04

7.34

10.49

16.30

26.47

10.77 (1.80)

PFOA

100

9.17

14.49

19.38

26.80

38.00

19.41 (1.56)

PFNA

100

0.84

1.38

1.80

2.51

3.88

1.82 (1.60)

PFDA

100

0.75

1.41

2.15

3.28

6.30

2.15 (1.91)

PFUdA

100

0.54

1.04

1.68

2.55

4.38

1.61 (1.95)

PFDoA

91.04

0

0.05

0.11

0.20

0.39

0.09 (3.09)

PFTrDA

88.93

0

0.04

0.11

0.18

0.37

0.09 (2.95)

Thyroid hormones (N = 300)

T3 (nmol/L)

100

0.67

0.77

0.84

0.94

1.10

0.85 (1.18)

FT3 (pmol/L)

98

1.34

1.53

1.76

2.00

2.42

1.77 (1.21)

T4 (nmol/L)

100

49.30

77.67

93.10

109.90

143.65

90.63 (1.36)

FT4 (pmol/L)

100

11.08

12.82

14.14

15.39

17.81

14.10 (1.15)

TSH (μIU/mL)

100

2.24

4.32

6.50

9.72

18.97

6.49 (1.87)

  1. LOD Limit of detection, GM Geometric mean, SD Standard deviation, PFHxS Perfluorohexane sulfonic acid, PFOS Perfluorooctane sulfonate, PFOA Perfluorooctanoic acid, PFNA Perfluorononanoic acid, PFDA Perfluorodecanoic acid, PFUdA Perfluoroundecanoic acid, PFDoA Perfluorododecanoic acid, PFTrDA Perfluorotridecanoic acid, PFTeDA Perfluorotetradecanoic acid, PFHxDA Perfluorohexadecanoic acid, PFDS Perfluorodecane sulfonate; T3, total triiodothyronine, T4 Total thyroxine, FT3 Free triiodothyronine, FT4 Free thyroxin, TSH Thyroid stimulating hormone