ABeta 42/40 Ratio

Primary unit: Ratio
LOINC codes: 33200-7, 70073-2
Tests that measure ABeta 42/40 Ratio: 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, Quest AD-Detect® Beta-Amyloid 42/40 Ratio, Plasma 11786

ABeta 42	Not established	pg/mL
ABeta 40	Not established	pg/mL
ABeta 42/40 Ratio	≥0.170

Quest Diagnostics test catalog, 11786

Tests

Check the catalog code, specimen, method and preparation for every test that measures ABeta 42/40 Ratio. Select up to five tests to compare them side by side.

Quest Diagnostics 1 test

Panels that include this biomarker

Quest AD-Detect® Beta-Amyloid 42/40 Ratio, Plasma 11786
3 analytes · Plasma · Fasting not stated · Turnaround Set up: Sun
Method and collection
Method
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Collection
Collect blood into a K2 EDTA Plasma tube and mix by inversion 10 times. Centrifuge to separate plasma from cells within 1 hour of collection. Carefully transfer plasma into a polypropylene tube or one of the Quest issued polypropylene pour-off/transfer tubes. Do not transfer to conical tube. If unable to centrifuge within 1 hour of collection, store tube on ice. Store frozen. Note: Quest Diagnostics does not perform this test for individuals under the age of 18. Pre-test and post-test counseling is strongly recommended.
Quest Diagnostics catalog page

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Sources

Quest Diagnostics test catalog
1 test: codes, specimens, methods, preparation and reference intervals.
LOINC 33200-7, 70073-2
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for ABeta 42/40 Ratio
Registered studies that measure ABeta 42/40 Ratio, 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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