Antithrombin III Antigen

LOINC codes: 1868-9
Tests that measure Antithrombin III Antigen: Quest Diagnostics 2

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, Antithrombin III Activity and Antigen 7017

Population	Interval
1 day-1 month	41-108 % normal
31 days-2 months	50-120 % normal
3-5 months	73-120 % normal
≥6 months	80-135 % normal
Antithrombin III Antigen	80-120 % normal

Quest Diagnostics test catalog, 7017

Tests

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

Quest Diagnostics 2 tests

Single-analyte tests

Antithrombin III Antigen 5158
Plasma · Fasting not stated · Turnaround Set up: Tues-Sat (a.m.); Report available: 2 days
Method and collection
Method
Immunoturbidimetric
Collection
Please submit a separate, frozen vial for each special coagulation assay ordered. Draw blood in a light blue-top tube containing 3.2% sodium citrate, mix gently by inverting 3-4 times. Centrifuge 15 minutes at 1500 g within one hour 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(s). Freeze immediately and transport on dry ice.
Reference notes
80-120 % normal
Quest Diagnostics catalog page

Panels that include this biomarker

Antithrombin III Activity and Antigen 7017
2 analytes · Plasma · Fasting not stated
Method and collection
Method
Chromogenic Substrate • Immunoturbidimetric
Collection
Please submit a separate, frozen vial for each special coagulation assay ordered. Draw blood in a light blue-top tube containing 3.2% sodium citrate, mix gently by inverting 3-4 times. Centrifuge 15 minutes at 1500 g within one hour 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(s). Freeze immediately and transport on dry ice.
Quest Diagnostics catalog page

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Sources

Quest Diagnostics test catalog
2 tests: codes, specimens, methods, preparation and reference intervals.
LOINC 1868-9
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Antithrombin III Antigen
Registered studies that measure Antithrombin III 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.

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

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