Portal Blood in Collateral Veins of Patients with Cirrhosis. Acetylation by the Intestine

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Abstract
Portal origin of blood in superficial abdominal collateral veins of patients with postal hypertension may be demonstrated simply and rapidly by feeding fluorescein or thiocyanate and finding higher concns. in the abdominal veins than in the antecubital veins. Seven out of 12 patients with cirrhosis gave positive tests for the portal origin of abdominal collateral vein blood. Patients with ascites are more likely to give positive results than those without ascites. Studies of human portal blood gave evidence for the acetylation of PABA by the intestinal tract.