Table 5 Laboratory markers of nutritional status following bariatric surgery. The mean value is shown

Vitamin D3 preop

30.0–70.0 ng/ml

30.6 (5.2–64.0)

23.6 (13.0–36.7)

24.1 (5.2–47.0)

35.4 (6.3–64.0)

Vitamin D3 post-op

31.0 (7.0–62.5)

29.9^a

27.8 (11.8–43.2)

33.3 (7.0–62.5)

Vitamin B1 preop

28.0–85.0 µg/l

73.3 (39.8–207.0)

74.3 (71–79)

73.1 (46.1–207.0)

73.4 (39.8–137.0)

Vitamin B1 post-op

69.4 (37.8–87.4)

70.9^a

70.3 (37.8–195.7)

70.7 (39.8–125.2)

Vitamin B2 preop

137.0–370.0 µg/l

204.4 (89.2–222.8)

219.7 (166–267)

172.2 (89.2–229.0)

219.3 (127–312)

Vitamin B2 post-op

201.9 (143.0–156.0)

187^a

183.5 (143–226)

212.9 (144–299)

Vitamin B6 preop

5.0–30.0 ng/ml

17.0 (1.9–62.4)

8.6 (3.4–12.0)

13.9 (1.9–36.7)

19.2 (6.2–62.4)

Vitamin B6 post-op

18.3 (3.4–53.4)

42.3^a

14.1 (3.4–44.4)

19.9 (5.0–53.4)

Vitamin B12 preop

211–911 pg/ml

450.7 (156.7–1360.0)

328 (174.8–444.1)

509.4 (156.7–1082.0)

431.1 (176.5–1360.0)

Vitamin B12 post-op

470.2 (169.5–1597.0)

516.7^a

509.6 (169.5–1597.0)

442.7 (176.5–1177.0)

HbA1c preop

4.4–6.0%

5.6 (4.6–8.5)

5.3^a

5.2 (4.8–5.5)

5.8 (4.6–8.5)

HbA1c post-op

5.5 (4.4–8.5)

5.9^a

5.1 (4.4–5.7)

5.8 (4.8–8.5)

Ferritin preop

22.0–112.0 ng/ml

56.9 (8–248)

Na

65.7 (8–248)

39.3 (14–69)

Ferritin post-op

Na

Na

Na

Na

Iron preop

35.0–145.0 µg/dl

70.6 (11–189)

58.3 (37–78)

79.6 (20–189)

67.0 (11–134)

Iron post-op

73.9 (11–203)

46^a

97.9 (20–203)

60.3 (11–134)

Folic acid preop

3.89–20.0 ng/ml

12.3 (2.6–20.0)

5.8 (3.7–6.9)

10.1 (2.6–20.0)

13.9 (4.5–20.0)

Folic acid post-op

12.9 (3.6–20.0)

20^a

10.6 (3.6–20.0)

14.1 (6.9–20.0)

Parathormone pre-op

15.0–65.0 pg/ml

49.8 (15.7–145.0)

37.3 (33.0–45.7)

46.5 (31.8–89.2)

53.3 (15.7–145.0)

Parathormone post-op

52.5 (23.4–109.4)

53^a

51.9 (34.3–109.4)

52.8 (23.4–98.2)

Protein preop

66.0–83.0 g/l

70.5 (34.8–48.5)

74.2 (70.9–77.4)

69.8 (62.7–77.8)

70.6 (63.7–79.2)

Protein post-op

69.3 (61.7–79.2)

69.3^a

69.7 (63.5–78.6)

69.1 (61.7–79.2)

Albumine preop

35.0–55.0 g/l

42.4 (34.8–48.5)

45.5 (44–47)

41.9 (36.2–48.3)

42.5 (34.8–48.5)

Albumin post-op

41.6 (34.8–48.5)

42.3^a

41.6 (36.2–45.8)

41.6 (34.8–48.5)

Magnesium preop

0.7–1.1 mmol/l

0.8 (0.7–0.9)

0.8 (0.8–0.9)

0.8 (0.7–0.9)

0.9 (0.8–0.9)

Magnesium post-op

1.0 (0.7–9.0)

0.8^a

0.8 (0.7–0.9)

1.2 (0.7–9.0)