Factor Ix Inhibitor

LOINC codes: 3185-6
Tests that measure Factor Ix Inhibitor: 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, Factor IX Activity and Human Inhibitor 17845

Population	Interval
Factor IX Activity	60-160 \| % normal
Factor IX Inhibitor	≤0.4 \| BU

Quest Diagnostics test catalog, 17845

Tests

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

Quest Diagnostics 1 test

Panels that include this biomarker

Factor IX Activity and Human Inhibitor 17845
2 analytes · Plasma · Fasting not stated
Method and collection
Method
Clot Based Assay • Photometric Clot Detection
Collection
Platelet poor plasma: Centrifuge light blue-top tube for 15 minutes at approximately 1500 x g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcL). Freeze immediately and ship on dry ice. Do not thaw.
Quest Diagnostics catalog page

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Sources

Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 3185-6
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Factor Ix Inhibitor
Registered studies that measure Factor Ix Inhibitor, 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.

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