Perturbation of paracetamol urinary metabolic ratios by urine flow rate.

Abstract:

:The effects of high and low urine flow rates on the urinary metabolic ratios for paracetamol glucuronidation, sulphation and oxidation were determined at steady-state in seven healthy young adult volunteers. Metabolic partial clearances were unaffected by urine flow rate, but individual paracetamol metabolic ratios varied 2.5- to 3.2-fold over a 7.4-fold range of urine flow rates (0.81-6.00 ml min-1). The change in metabolic ratios was due entirely to a 2.5-fold change in renal clearance of unchanged paracetamol. These data emphasise the limitations of the metabolic ratio as a measure of intrinsic clearance for compounds which undergo some degree of tubular reabsorption.

journal_name

Br J Clin Pharmacol

authors

Miners JO,Osborne NJ,Tonkin AL,Birkett DJ

doi

10.1111/j.1365-2125.1992.tb05643.x

keywords:

subject

Has Abstract

pub_date

1992-10-01 00:00:00

pages

359-62

issue

4

eissn

0306-5251

issn

1365-2125

journal_volume

34

pub_type

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