7 - 12 days
Test Updated:
Phosphorus, Stool
Magnesium, Stool
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Test Overview
Inductively Coupled Plasma Optical Emission Spectrometry (ICP/OES)
Compliance or Abuse Monitoring of Laxatives
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. PHOSPHORUS: 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.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Collect random stool specimen and refrigerate.