% Free

LOINC codes: 10886-0, 12841-3, 2857-1
Tests that measure % Free: 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, PSA, Free and Total 31348

Population	Interval
PSA, Total, Male	≤4.0 ng/mL
PSA, Total, Female	Not established
PSA, Total, PSA, Free	See Laboratory Report
PSA, % Free, Male	>25 % (calc)
PSA, % Free, Female	Not established

Quest Diagnostics test catalog, 31348

Tests

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

Quest Diagnostics 1 test

Panels that include this biomarker

PSA, Free and Total 31348
2 analytes · Serum · Fasting not stated · Turnaround Set up: Tues-Sat (Day shift); Report available: 4 days
Method and collection
Method
Immunoassay (IA)
Collection
Do not collect specimen after a transrectal biopsy, results may be falsely elevated. Administration of STRENSIQ may interfere in certain assays and may falsely elevate values. For patients receiving STRENSIQ, consideration should be given to using alternate methods.
Quest Diagnostics catalog page

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Sources

Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 10886-0, 12841-3, 2857-1
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for % Free
Registered studies that measure % Free, 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.