Oral contraceptives can cause falsely low vitamin B12 levels

Acta Haematologica

Volumn 104, Issue 1, 2000, Pages 22-24

  Gardyn, J ^a   Mittelman, M ^a   Zlotnik, J ^a   Sela, B A ^a   Cohen, A M ^a  

^a RABIN MEDICAL CENTER   (Israel)

Author keywords

Cobalamins; Estrogens; Falsely low vitamin B12; Oral contraceptives; Transcobalamin; Transcobalamin II

Indexed keywords

ASCORBIC ACID; CYANOCOBALAMIN; HAPTOCORRIN; HOMOCYSTEINE; METHYLMALONIC ACID; ORAL CONTRACEPTIVE AGENT;

ARTICLE; DIAGNOSTIC ERROR; FEMALE; FOLIC ACID DEFICIENCY; HUMAN; METHYLMALONIC ACIDURIA; MULTIPLE MYELOMA; NORMAL HUMAN; PRIORITY JOURNAL; PROTEIN BLOOD LEVEL; RADIOIMMUNOASSAY; SCINTISCANNING;

EID: 0033667509     PISSN: 00015792     EISSN: None     Source Type: Journal    
DOI: 10.1159/000041064     Document Type: Article

References (27)

1. Nutritional factors in the production and function of erythrocytes
2. Neonatal megaloblastic anemia due to inherited transcobalamin II deficiency in two siblings
3. 12
4. R-binder deficiency. A clinical benign cause of cobalamin pseudodeficiency
5. Megaloblastic anemias, cobalamin and folate
6. Problems in the diagnosis and investigation of megaloblastic anemia
7. Status of laboratory testing in the diagnosis of megaloblastic anemia
8. 12 metabolism
9. 12 levels with oral contraceptive use
10. 12 metabolism
11. 12 absorption and plasma level
12. 12-binding protein levels associated with oral contraceptives
13. Plasma homocysteine on oral oestrogen-containing contraceptives and in men with oestrogen-treated prostatic carcinoma
14. Vitamins and oral contraceptive use
15. Diagnosis of cobalamin deficiency. I. Usefulness of serum methylmalonic acid and total homocysteine concentrations
16. Fractionation of serum transcobalamins on charged cellulose filters
17. Homocysteine and other thiols in plasma and urine: Automated determination and sample stability
18. A simple and rapid thin-layer chromatographic technique for the detection of methylmalonic acid in urine
19. Megaloblastic anemias
20. 12(cobalamin) deficiency
21. 12, folic acid and their binding proteins during pregnancy
22. Mild transcobalamin (TC) I deficiency is common and may be responsible for many low serum cobalamin levels: Observation in a family and survey of 106 patients with low serum cobalamin levels not explained by malabsorption
23. Multivitamin supplementation in oral contraceptives
24. Changes in biochemical indices of vitamin nutrition in women using oral contraceptives during treatment with 'Surbex 500'
25. Comparison of the deoxyuridine suppression test with serum levels of methylmalonic acid and homocysteine in mild cobalamin deficiency
26. Holotranscobalamin - A sensitive marker of cobalamin malabsorption