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HelpTest ID FCLPS Cathartic Laxatives Profile, Stool
Method Name
Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES)
Reporting Name
Cathartic Laxatives Profile, FSpecimen Type
Fecal10 g of stool. No preservative. Send specimen in a acid-washed or trace metal-free plastic container, MML supply T656. Send specimen refrigerated.
Specimen Minimum Volume
10 mL stool liquid or 10 g stool solid
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Fecal | Refrigerated (preferred) | 30 days |
| Ambient | 30 days | |
| Frozen | 30 days |
Reference Values
Reporting limit determined each analysis
Magnesium (mg/g)
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 (mg/g)
Phosphorus concentration 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 1.4-22 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.
Day(s) Performed
Varies, Monday, Tuesday, Wednesday and Friday
Report Available
7 daysPerforming Laboratory
NMS LabsCPT Code Information
83735-Magnesium
84100-Phosphorus Inorganic (Phosphate)