Biomarker Lens

Common biomarkers

  • Hemoglobin
  • Glucose
  • ALT
  • Apolipoprotein B
  • C-Reactive Protein, Cardiac
  • Ferritin
  • Alb/Creat Ratio, Urine
  • Alkaline Phosphatase
  • FSH
  • T4,Free(Direct)

Biomarkers · Chemical

Beta-amyloid 42

Primary unit
pg/mL
LOINC codes
33200-7
Tests that measure Beta-amyloid 42
Labcorp 3, 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, Lumipulse® p-tau217/Beta-Amyloid 42 Ratio, Plasma 17970

PopulationInterval
ptau217Not Established
ABeta 42Not Established
ptau217/ABeta 42 Ratio≤0.00370
Lower Risk≤0.00370
Indeterminate Risk0.00371-0.00737
Higher Risk≥0.00738

Quest Diagnostics test catalog, 17970

Quest Diagnostics, Quest AD-Detect® Beta-Amyloid 42/40 Ratio, Plasma 11786

ABeta 42Not establishedpg/mL
ABeta 40Not establishedpg/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 Beta-amyloid 42. Select up to five tests to compare them side by side.

Labcorp 3 tests

Panels that include this biomarker

  • Beta Amyloid 42/40 Ratio, Plasma 505725

    2 analytes · Plasma · Fasting not stated · Turnaround 5 days

    Method and collection
    Method
    Sysmex chemiluminescence enzyme immunoassay (CLEIA)
    Collection
    Draw full lavender-top (EDTA) tube of blood. Separate plasma from blood via centrifugation (>1500g for 10 minutes) within 40 minutes after blood collection. Transfer plasma to Labcorp polypropylene transport tube and seal.
    Labcorp catalog page

  • Lumipulse® pTau-217/Beta Amyloid 42 Ratio, Plasma 505809

    2 analytes · Plasma · Fasting not stated · Turnaround 5 - 7 days

    Method and collection
    Method
    Fujirebio Lumipulse chemiluminescent enzyme immunoassay (CLEIA)
    Collection
    Draw full lavender-top (EDTA) tube of blood. Immediately separate plasma from blood via centrifugation (2,000 g for 10 minutes) within two hours after blood collection. Transfer plasma to Labcorp polypropylene transport tube, seal and freeze .
    Labcorp catalog page

  • ATN Profile 484400

    4 analytes · Plasma · Fasting not stated · Turnaround 7 - 10 days

    Method and collection
    Method
    Sysmex chemiluminescence enzyme immunoassay (CLEIA) and Roche Diagnostics electrochemiluminescence immunoassay (ECLIA)
    Collection
    Draw two full lavender-top (EDTA) tubes of blood. Separate plasma from blood via centrifugation (>1500g for 10 minutes) within 40 minutes after blood collection. Transfer plasma to two Labcorp polypropylene transport tubes and seal.
    Labcorp catalog page

Quest Diagnostics 2 tests

Panels that include this biomarker

  • Lumipulse® p-tau217/Beta-Amyloid 42 Ratio, Plasma 17970

    3 analytes · Plasma · Fasting not stated · Turnaround Set up: Mon-Sat

    Method and collection
    Method
    Fujirebio Lumipulse Chemiluminescent Enzyme Immunoassay
    Collection
    Centrifuge sample within 2 hours of collection and transfer to a polypropylene tube for transport. Freeze within 24 hours. Transport frozen.
    Quest Diagnostics catalog page

  • 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

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.