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Table 1 Postoperatively laboratory nutritional screen in the study population

From: An audit to determine if vitamin b12 supplementation is necessary after sleeve gastrectomy

Biochemistry test Reference values Low Normal High
Hb Male (13-18 g/dl) 0/5 (0%) 5/5 (100%) 0/5 (0%)
  Female(11.5- 16.5 g/dl) 2/35 (6%) 33/35 (94%) 0/35 (0%)
MCV (80-99fl) 2/40 (5%) 38/40 (95%) 0/40 (0%)
Magnesium (0.7-1.0 mmol/l) 0/19 (0%) 19/19 (100%) 0/19 (0%)
Ferritin (10-420 μg/l) 3/37 (8%) 34/37 (92%) 0/37 (0%)
Folate (2.7-17.3 μg/l) 1/35 (3%) 27/35 (77%) 7/35 (20%)
Vitamin B12 (220-700 ng/l) 8/41 (20%) 32/41 (78%) 1/41 (2%)
Zinc (8.4-23.0 μmol/l) 0/20 (0%) 20/20 (100%) 0/20 (0%)
Copper (13-24 μmol/l) 0/16 (0%) 15/16 (94%) 1/16 (6%)
Selenium (0.80-2.0 μmol/l) 9/21 (43%) 12/21 (57%) 0/21 (0%)
Vitamin D (50-150nmol/l) 17/21 (81%) 4/21 (19%) 0/21 (0%)
Albumin (32-50 g/l) 0/41 (0%) 41/41 (100%) 0/41 (0%)
  1. Deficiency (Low) was defined as the plasma level of the vitamin/trace element being below the reference values, Normal was defined as the plasma level within the reference values range and High was defined as the plasma level greater than the reference values.