Ordering Recommendation

Mnemonic

FECMG

Methodology

Quantitative Spectrophotometry

Performed

Sun-Sat

Reported

Within 48 hours

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

24-hour or random stool.

Specimen Preparation

Mix specimen well and transfer a 5 g stool to an unpreserved stool transport vial (ARUP Supply #40910). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 g). Do not add saline or water to liquefy specimen. Indicate total time and weight.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Formed or viscous stools.

Remarks
Stability

Ambient: 1 hour; Refrigerated: 1 week; Frozen: 1 month

Reference Interval

Test Number
Components
Reference Interval
  Magnesium, Fecal - per volume 0-110 mg/dL
  Magnesium, Fecal - per 24h 0-355 mg/d

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Modified FDA

Note

Hotline History

N/A

CPT Codes

83735

Components

Component Test Code* Component Chart Name LOINC
0020377 Fecal Total Weight 30078-0
0020388 Magnesium, Fecal - per volume 29911-5
0020389 Magnesium, Fecal - per 24h 29912-3
0020392 Collection Time for Fecal Spec 13363-7
0060717 Collection Time for Fecal Specimen 13363-7
0097131 Fecal Weight 30078-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Electrolytes, Feces
  • Fecal Magnesium
Magnesium, Fecal