WLS Labs

Oct 12, 2008

Info taken from the ASMBS Reccomendations for Postop Bariatric Nutritonal Supplementation... pages 5 and 6.

Suggested biochemical monitoring tools for nutritional status

Serum thiamin - B1 (thiamin)
Normal range: 10-64 ng/mL
Postop deficiency: Rare, but occurs with RYGB, AGB, and BPD/DS

PLP - B6 (pyridoxine)
Normal range: 5-24 ng/mL
Postop deficiency: Rare

Serum B12 - B12 (cobalamin)
Normal range: 200-1000pg/mL  (Andrea's ideal is around 1200-1800)
Postop deficiency: Common with RYGB in absence of supplementation, 12-33%

RBC folate - Folate
Normal range: 280-791 ng/mL
Postop deficiency: uncommon

Ferritin - Iron
Normal range: Males 15-200 ng/mL, Females 12-150 ng/mL  (Andrea's ideal is 200)
Postop deficiency: common with RYGB for menstruating women (51%) and patients with super obesity (49-52%)

Plasma retinol - Vitamin A
Normal range:  20-80 mcg/dL
Postop deficiency: common (50%) with BPD/DS after 1 yr, <= 70% at 4 yrl may occur with RYGB/AGB

25(OH)D - Vitamin D
Normal range: 25-40 ng/mL (Andrea's optimal is 80-100)
Postop deficiency: Common with BPD/DS after 1 yr; may occur with RYGB; prevalence unknown

Plasma alpha tocopherol - Vtiamin E
Normal range: 5-20 mcg/mL
Postop deficiency: Uncommon

PT - Vitmain K
Normal range: 10-13 s
Postop deficiency: Common with BPD/DS after 1 yr

Plasma zinc - Zinc
Normal range: 60-130 mcg/dL
Postop deficiency: Common with BPD/DS after 1 yr; may occur with RYGB

Serum albumin - Protein
Serum total protein
Normal range: albumin 4-6 g/dL; total protein 6-8 g/dL
Postop deficiency: Rare, but can occur with RYGB, AGB, and BPD/DS if protein intake is low in total intake or indispensible amino acids

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