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Lab Manual for Moffitt-Long and Mount Zion

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Laxative screen, stool

Item Value
Approval req'd? No
Available Stat? No
Test code LAXS
Test group Laxative
Performed by NMS via Quest
Sendout? Yes
Method TLC, AAS, ICPAES
Collection Instructions Submit only liquid stool for testing for cathartic laxatives profile. The stool should be submitted in a tightly screw-capped container.
Container type Urine cup
Amount to Collect See preferred volume
Sample type Stool (liquid)
Preferred volume 20 mL stool
Min. Volume 20 mL stool
UCSF Rejection Criteria Formed stool
Processing notes Freeze sample at -20C. Ship frozen on dry ice. Order Quest test #3141N
Ref Lab Rejection Criteria Received at room temperature.
Normal range
Synonyms cascara; senna; bisacodyl; penolpthalein; anthroquinones; dulcolax; ex-lax
Turn around times Turnaround 10-14 days
Additional information This assay will detect abuse of the common laxatives such Dulcolax, Phenolax and Clysodrast.

The reporting limits for stool specimens are approximations and may vary with the
Matrix consistency.
CPT coding 82489-90, 83735-90, 84100-90
LOINC code 21361-1
Last Updated 3/24/2013 7:32:42 PM
Entry Number 1082
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