Fetal/Placental Ratio for Small for Gestational Age Infants

week gestation

F/P ratio low

mean F/P ratio

F/P ratio high

+/- F/P

27

4.4

4.58

4.76

0.179

28

4.23

4.68

5.13

0.454

29

4.7

4.7

4.7

30

3.15

4.67

6.19

1.518

31

4.16

5.12

6.08

0.963

32

3.31

4.96

6.61

1.649

33

4.28

5.24

6.20

0.963

34

5.22

5.53

5.84

0.313

35

4.85

6.45

8.05

1.597

36

5.64

6.25

6.86

0.614

37

5.32

6.45

7.58

1.127

38

6.64

7.05

7.46

0.412

39

7.18

7.65

8.12

0.469

40

7.5

7.98

8.46

0.48

41

6.62

7.32

8.02

0.703

42

6.65

7.38

8.11

0.732