Observations on Tests of Folic Acid Absorption and Clearance

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Hutner S. H. Nathan H. A. Baker H. (1959). Metabolism of folic acid and other pterinpteridine vitamins. Vitamins and Hormones, 17, 2.

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Knowles J. P. Prankerd T. A. J. Westall R. G. (1960). Simplified method for detecting formiminoglutamic acid in urine as a test of folic acid deficiency, Lancet, 2, 347.

Luhby A. L. Cooperman J. M. Teller D. N. (1959). Urinary excretion of formiminoglutamic acid. Application in diagnosis of clinical folic acid deficiency. Amer. J. clin. Nutr., 7, 397.

Mollin D. L. Pitney W. R. Baker S. J. Bradley J. E. (1956). The plasma clearance and urinary excretion of parenterally administered ⁵⁸COB₁₂ . Blood, 11, 31.

Silverman M. Gardiner R. C. Condi T. P. T. (1958). A method for the detection of N-formiminoglutamic acid in urine. J. nat. Cancer. Inst., 20, 71.

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Swendseid M. E. Swanson A. L. Meyers M. C. Bethell F. H. (1952). The nutritional status of folic acid in persons with leukaemia and its possible relation to effects of aminopterin therapy. Blood, 7, 307.

Toennies G. Usdin E. Phillips P. M. (1956). Precursors of folic acid-active factors of blood. J. biol. Chem., 221, 855.

Usdin E. Phillips P. M. Toennies G. (1956). Multiplicity of the folic acid-active factors of blood. J. biol. Chem., 221, 865.