Fecal Weight (Total)

Primary unit: g
LOINC codes: 30078-0
Tests that measure Fecal Weight (Total): Labcorp 1, Quest Diagnostics 1

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Nitrogen, Total, Feces 5014

Population	Interval
<16 years:	Not established
≥17 years:	1-2 g/24 hours

Quest Diagnostics test catalog, 5014

Tests

Check the catalog code, specimen, method and preparation for every test that measures Fecal Weight (Total). Select up to five tests to compare them side by side.

Labcorp 1 test

Panels that include this biomarker

Fecal Fat, Quantitative 001354
2 analytes · Stool · Fasting not stated · Turnaround 4 - 7 days
Method and collection
Method
Extraction/spectrophotometry
Preparation
Adult patients should be on a standard diet containing 50 to 150 g of fat per day for at least three days before test is started and during the 72-hour collection. In children, the amount of fat in the diet should be constant for one day before the test and during the test. The patient should not have had mineral oil as a laxative prior to specimen collection.
Collection
Collect stool directly into can. Do not fill any can more than 2/3 full. Secure lid with pressure and firmly attach the O-ring. State collection time on the can label. Place the can and the absorbent sheet into the leakproof plastic bag and seal. Send the entire can, or if submitting aliquot , follow this procedure: 1. Weigh specimen and collection container and subtract the weight of an empty container of same type (one-gallon can weight with lid: 360 g metal or 320 g plastic container). This is the “net weight” to be recorded on the test request form. 2. Open the container and observe whether the contents are liquid. If liquid stool , secure the lid, mix, and submit an aliquot of the total collection. If solid stool , add deionized water (approximately 500 mL) to the specimen container and mix thoroughly to create a homogenous specimen. Submit a 5 to 25 mL aliquot of the total collection in an empty stool transport vial (LabCorp N° 59517) or screw-cap urine bottle (LabCorp N° 20648), sterile no additives. 3. Record on both the container and the test request form the amount of water added to liquefy the stool or if no water was required.
Reference notes
• 0 to 18 years: 0.0-3.1 g/24 hours • >18 years: 0.0−7.1 g/24 hours
Labcorp catalog page

Quest Diagnostics 1 test

Panels that include this biomarker

Nitrogen, Total, Feces 5014
2 analytes · Stool · Fasting not stated · Turnaround Set up: Sun-Fri
Method and collection
Method
Dumas Combustion
Collection
Send entire collection frozen on dry ice in containers supplied by Mayo. Note: 1. Length of collection period is required on test requisition for processing 2. Sample submitted must contain at least 10 grams of feces 3. Barium and boric acid interfere with test procedure
Quest Diagnostics catalog page

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Sources

Labcorp test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 30078-0
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Fecal Weight (Total)
Registered studies that measure Fecal Weight (Total), on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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