Vitamin B7

Primary unit: ng/mL
LOINC codes: 1980-2
Tests that measure Vitamin B7: 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, Biotin (Vitamin B7) 391

Population	Interval
<12 years	100.0-2460.2 pg/mL
≥12 years	221.0-3004.0 pg/mL

Quest Diagnostics test catalog, 391

Tests

Check the catalog code, specimen, method and preparation for every test that measures Vitamin B7. Select up to five tests to compare them side by side.

Labcorp 1 test

Single-analyte tests

Vitamin B7 070097
Serum · Fasting not stated · Turnaround 2 - 7 days
Method and collection
Method
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Collection
Transfer separated serum or plasma to a plastic transport tube. Include the patient's age on the test request form.
Reference notes
0.05−0.83 ng/mL
Labcorp catalog page

Quest Diagnostics 1 test

Single-analyte tests

Biotin (Vitamin B7) 391
Serum · Fasting not stated · Turnaround Set up: Tues; Report available: 19 days
Method and collection
Method
Bioassay (BA)
Collection
Allow sample to clot for 30 minutes, spin at 3000 rpm for 10 minutes and transfer serum to a plastic amber vial. If amber vial is not available, wrap tube in aluminum foil to protect from light. Freeze within 30 minutes and send frozen.
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 1980-2
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Vitamin B7
Registered studies that measure Vitamin B7, 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.

Spotted an error? Email hello@biomarkerlens.com with the page URL and the primary source that corrects the entry.