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Laxative Screen (Urine)
Test Code: LAX
Tube type: Universal Container
Special instructions
Ideally, 3 samples should be collected on consecutive days during symptoms.
Sent away
to Salford Royal Hospital, Manchester
Turnaround Time
3
weeks
Department: Biochemistry
Clinical Application
This is a qualitative test.
This screen includes: Bisacodyl (Dulcolax), Danthron, Rhein (Senokot) and Phenolphthalein.
Webpage updated: November 2025.
