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Quest AD-Detect Beta-Amyloid 42/40 Ratio, Plasma Blood Test
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| Feature |
Labcorp
|
Quest Diagnostics
|
|---|---|---|
| Price | Coming soon | $320.49 |
| Results in | — | ~5 business days |
| Sample type | — | Blood Plasma |
| Require fasting | — | No |
About the test
This LC-MS/MS assay measures beta-amyloid 40 (AB40) as well as AB42 in plasma, rather than AB42 alone. This permits the normalization of beta amyloid levels circulating in plasma in different patients. Using the ratio of beta-amyloid 42/beta-amyloid 40, improves sensitivity and specificity for detecting Alzheimer's disease.
Included biomarkers & Reference ranges
| Biomarker | Reference range |
|---|---|
| Amyloid Beta 40 Peptide Measures amyloid beta 40 in plasma, a common protein fragment from the brain used together with amyloid beta 42 to calculate the 42/40 ratio. | — |
| Amyloid Beta 42/40 Ratio A ratio calculated from amyloid beta 42 and amyloid beta 40 in plasma, used to help estimate the likelihood of amyloid plaques in the brain. | — |
| Amyloid Beta 42 Peptide Measures amyloid beta 42 in plasma, the protein fragment that forms plaques in the brain in Alzheimer's disease, used to calculate the 42/40 ratio. | — |
Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.
How it works
- 1. Order online No referral or insurance
- 2. Get a requisition By email in 24–72 hours
- 3. Visit a draw center Bring a matching photo ID
- 4. Get results Securely by email
- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Consultations
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