Test Overview
Test Methodology
Inductively Coupled Plasma Optical Emission Spectrometry (ICP/OES)
Test Usage
Compliance or Abuse Monitoring of Laxatives
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. 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.
Test Details
Days Set Up
Varies, Monday, Tuesday, Wednesday, Friday
Analytic Time
7 - 12 days
Soft Order Code
MMLR
Synonyms
- Phosphorus, Stool
- Magnesium, Stool
Laboratory
Sendout
Reference Laboratory
Mayo FCLPS (91193) (NMS 1033ST)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect random stool specimen and refrigerate.
Normal Volume
10 grams (solid) or 10 mL (fluid) stool
Additional Information
Test includes Magnesium [FAAS] and Phosphorus [ICP/MS]. Test sent to Mayo Medical Laboratories; performed by NMS Labs.
Billing
CPT Code
80103 x2, 83735, 84100
NY State Approved
No