RT Journal Article SR Electronic T1 Urinary beta-aminoisobutyric acid excretion in thalassaemia JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 154 OP 157 DO 10.1136/jcp.22.2.154 VO 22 IS 2 A1 Ph. Fessas A1 A. Koniavitis A1 P. M. Zeis YR 1969 UL http://jcp.bmj.com/content/22/2/154.abstract AB The quantity of beta-aminoisobutyric acid (BAIB) excreted in the urine of patients with an intact spleen suffering from thalassaemia major appears to be proportional to the number of the circulating normoblasts and inversely proportional to the haemoglobin level. After splenectomy only minute amounts of BAIB are excreted. Transfusion constantly, but temporarily, reduces urinary excretion of beta-aminoisobutyric acid. Other anaemic but non-thalassaemic patients may excrete low levels.