Sign in →

Test Code FCLPF Cathartic Laxatives Profile, Stool


Specimen Required


***Must submit one specimen per order. Specimens cannot be shared between multiple orders.***

Specimen Type: Stool

Container/Tube: Acid-washed or trace metal-free plastic container, MCL supply T656

Specimen Volume: 10 g

Collection Instructions: Collect 10 g of stool with no preservative. Send specimen in an acid-washed or trace metal-free plastic container, MCL supply T656. Send specimen refrigerated.


Method Name

Inductively Coupled Plasma Optical Emission Spectrometry (ICP/OES)

Reporting Name

Cathartic Laxatives Profile, F

Specimen Type

Fecal

Specimen Minimum Volume

10 mL stool liquid or 10 g stool solid

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Refrigerated (preferred) 30 days
  Ambient  30 days
  Frozen  30 days

Reference Values

Reporting limit determined each analysis.

Units: mg/g

Interpretation

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).

  

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 (Based on the reported range of phosphorus eliminated per day in stool and the range of stool mass per day in adults).

  

Performing Laboratory

NMS Labs

CPT Code Information

83735

84100

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FCLPF Cathartic Laxatives Profile, F Not Provided

 

Result ID Test Result Name Result LOINC Value
Z5906 Magnesium 10880-3
Z5907 Phosphorus 10884-5

Day(s) Performed

Monday through Sunday

Report Available

10 to 14 days