[Effect of drugs on laboratory diagnosis--effect of propranolol on selected laboratory values].

In the accessible literature the influence of beta-blockers on laboratory methods is estimated only little systematically and nearly exclusively on parameters of the glucose and lipometabolism. The influence on several methods in vitro is without relevance to practice. Own examinations showed that in 32 patients with essential hypertension of stage I (after Baumann and Nitschkoff) under therapeutic doses of 50--80 mg propranolol a day in none of the 18 chemical parameters tested after a four weeks' treatment significant deviations relevant to practice appeared in comparison to the parameters before treatment.