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



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