Factor IX Antigen

Primary unit: %
LOINC codes: 3189-8, 3190-6
Tests that measure Factor IX Antigen: Labcorp 1, Quest Diagnostics 1

Tests

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

Labcorp 1 test

Single-analyte tests

Factor IX Antigen 086310
Plasma · Fasting not stated · Turnaround 5 - 7 days
Method and collection
Method
Enzyme-linked immunosorbent assay (ELISA)
Preparation
Do not draw from an arm with a heparin lock or heparinized catheter.
Collection
Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate.5 Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.6,7 The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples unless the sample is collected using a winged (butterfly) collection system. With a winged blood collection set, a discard tube should be drawn first to account for the dead space of the tubing and prevent under-filling of the evacuated tube.8,9 When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternative anticoagulant should be collected after the blue-top tube. Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes. Please print and use the Volume Guide for Coagulation Testing to ensure proper draw volume.
Reference notes
60–150%
Labcorp catalog page

Quest Diagnostics 1 test

Single-analyte tests

Factor IX Antigen 91053
Plasma · Fasting not stated · Turnaround Set up: 1x per month
Method and collection
Method
Immunoassay (IA)
Collection
Platelet-poor plasma: Centrifuge light blue-top tube for 15 minutes at approximately 1500 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 screw-cap vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic screw-cap vial. Plasma must be free of platelets (<10, 000/mcl). Freeze immediately and ship on dry ice.
Reference notes
0.64-1.29 IU/mL
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 3189-8, 3190-6
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Factor IX Antigen
Registered studies that measure Factor IX Antigen, 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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