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Cathartic Laxatives Profile, Stool
Test Code3141
CPT Codes
83735, 84100<br /> **This test is not available for New York patient testing.**
Includes
Magnesium, Phosphorus
Preferred Specimen
10 grams of stool submitted in an acid washed, metal-free container
Minimum Volume
10 grams
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Refrigerated: 30 days
Frozen: 30 days
Methodology
Ion Coupled Plasma/Optical Emission Spectrophotometry (ICP/OES)
Setup Schedule
Set up: As needed; Report available: 8 days
Reference Range
Magnesium:
Magnesium concentrations in stool water above the normal levels of 0.7-1.2 mg/mL have been indicative of surreptitious abuse of magnesium containing laxatives.
NMS Labs calculated normal:
Approximately 0.5-10 mg/g (based on the reported range of magnesium eliminated per day in stool and the range of stool mass per day in adults).
Not for clinical diagnostic purposes.
Phosphorus:
Phosphorus concentrations in stool water averaged 1.8 +/- 0.3 mg/mL (ranged from 0.3-4.2 mg/mL) following administration of 105 mmol of sodium phosphate.
NMS Labs calculated normal:
Approximately 1.4-2.2 mg/g (based on the reported range of phosphorus eliminated per day in stool and the range of stool mass per day in adults).
Not for clinical diagnostic purposes.
Clinical Significance
Compliance or abuse monitoring (laxative). Not for clinical diagnostic purposes.
