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HANS POPPER, M.D.; FREDERICK STEIGMANN, M.D.; KARL A. MEYER, M.D.; S. S. ZEVIN, B.S.

Arch Intern Med. 1943;72(4):439-460.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To recognize clinical and subclinical vitamin A deficiency the blood level of vitamin A,¹ visual tests for night blindness,² biomicroscopic changes in the cornea³ and other means have been used. The results obtained and the conclusions drawn have varied. Some authors have concluded that vitamin A deficiency is common⁴; others have considered it to be rare.⁵

The liver is the main storage place for vitamin A. It contains about 95 per cent of the total amount of the vitamin in the body.⁶ Therefore, it can serve as an index of the vitamin A status. Hence, it would seem that those tests for deficiency of the vitamin would be significant which parallel low or absent stores in the liver.

The present study deals with the significance of the vitamin A level of the blood. The vitamin A concentration of human blood plasma was compared with the vitamin A content . . . [Full Text PDF of this Article]

Author Affiliations
CHICAGO

From the Cook County Hospital; the Departments of Pathology and Internal Medicine, University of Illinois, College of Medicine, and the Department of Surgery, Northwestern University Medical School, and the Cook County Graduate School of Medicine.

Footnotes
Supported by a grant from the Scientific Committee of the American Medical Association and from the S. M. A. Corporation, Chicago.