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. Author manuscript; available in PMC: 2018 Feb 26.
Published in final edited form as: Surg Obes Relat Dis. 2012 Feb 1;8(5):542–547. doi: 10.1016/j.soard.2012.01.013

Table 3.

Abnormal metabolic, mineral, and vitamin measures

Laboratory tests Baseline At 1 yr At 3 yr At 5 yr
Hematocrit 18.3% ↓ (15/82)   8.8% ↓ (3/34)   9.1% ↓ (2/22) 25.0% ↓ (5/20)
Hemoglobin 20.7% ↓ (17/82)   8.8% ↓ (3/34)   9.1% ↓ (2/22) 28.6% ↓ (6/21)
Ferritin      .0% (0/12)   8.6% ↓ (3/35) 15.8% ↓ (3/19)   5.6% ↓ (1/18)
Iron   6.6% ↓ (1/15)   3.0% ↓ (1/33) 10.5% ↓ (2/19)      .0% (0/16)
TIBC   6.7% ↑ (1/15)     .0% ↓ (0/33) 10.5% ↑ (2/19)   6.3% ↑ (1/16)
Total protein   9.6% ↓ (7/73)   5.9% ↓ (2/34)      .0% (0/22)   5.6% ↓ (1/18)
Albumin 26.5% ↓ (20/74) 12.9% ↓ (4/32)   5.2% ↓ (2/20)   5.5% ↓ (1/18)
PTH 51.5% ↑ (17/33) 22.2% ↑ (6/27)   7.7% ↑ (1/13) 58.3% ↑ (7/12)
Calcium   9.9% ↓ (8/81)      .0% (0/32)      .0% (0/20)      .0% (0/19)
Magnesium 17.9% ↓ (14/78)      .0% (0/33)      .0% (0/19)      .0% (0/15)
Phosphorus   5.1% ↓ (4/78)      .0% (0/33)     .0% ↑ (0/18)   6.3% ↓ (1/16)
Zinc NA 10.7% ↓ (3/28)      .0% (0/14) 14.3% ↓ (2/14)
HbA1c 31.4% ↑ (16/51)     .0% ↑ (0/23) 10.5% ↑ (2/19) 47.6% ↑ (10/21)
Vitamin A NA   7.7% ↓ (2/26)      .0% (0/18)      .0% (0/14)
Vitamin B1   9.1% ↓ (1/11)      .0% (0/22) 14.3% ↓ (2/14) 30.8% ↓ (4/13)
Vitamin B12 NA   2.9% ↓ (1/35)      .0% (0/19)      .0% (0/17)
Folate NA   8.8% ↓ (3/34)   5.5% ↓ (1/18)      .0% (0/16)
Vitamin D 75.0% ↓ (27/36) 34.3% ↓ (12/35) 55.6% ↓ (10/18) 42.1% ↓ (8/19)

TIBC = total iron binding capacity; PTH = parathyroid hormone; NA = not available; HbA1c = glycated hemoglobin.

Arrows indicated increases or decreases.

HHS Vulnerability Disclosure