Comparative Pharmacology
Head-to-head clinical analysis: PORCINE SECRETIN versus XYLOSE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: PORCINE SECRETIN versus XYLOSE.
PORCINE SECRETIN vs XYLOSE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Stimulates exocrine pancreatic secretion by acting on secretin receptors on pancreatic ductal cells, increasing bicarbonate and water secretion. Also stimulates bile and gastric acid secretion.
Xylose is a pentose sugar that is absorbed in the small intestine via passive diffusion and active transport. It is used to assess intestinal mucosal integrity; its absorption reflects the function of the enterocytes. After absorption, it is not metabolized and is excreted unchanged in urine, making it a marker for intestinal absorption and renal function.
0.2 mcg/kg intravenous bolus over 1 minute, maximum 20 mcg.
Adults: 25 g orally in 500 mL water, administered as a single dose for D-xylose absorption test.
None Documented
None Documented
The terminal elimination half-life is approximately 4-6 minutes, reflecting rapid degradation by plasma proteases; this short half-life limits its systemic duration of action and necessitates continuous infusion for sustained secretory testing.
Terminal elimination half-life: 1.2-2.5 hours in adults with normal renal function; prolonged in renal impairment (up to 10 hours).
Primarily renal, with over 90% of the administered dose eliminated via glomerular filtration and tubular reabsorption; fecal and biliary excretion are negligible.
Renal: approximately 85-90% eliminated unchanged in urine; biliary/fecal: negligible (<5%).
Category C
Category C
Diagnostic Agent
Diagnostic Agent