Phosphorylated Tau 181 (pTau-181) Blood Test
Compare labs
| Feature |
Labcorp
|
Quest Diagnostics
|
|---|---|---|
| Price | $379.99 | $333.49 |
| Results in | ~3 business days | ~5 business days |
| Sample type | Blood Plasma | Blood Plasma |
| Require fasting | No | No |
About the test
This test measures the concentration of p-Tau181 protein in the blood. Elevated levels of p-Tau181 are associated with tauopathies, including Alzheimer's disease, and can be used to differentiate Alzheimer's from other neurodegenerative conditions. This biomarker is particularly valuable for early diagnosis, monitoring disease progression, and evaluating response to therapeutic interventions in Alzheimer's disease and related disorders.
Included biomarkers & Reference ranges
| Biomarker | Reference range |
|---|---|
| Phosphorylated Tau 181 (p-tau181) A blood-based marker of a protein involved in Alzheimer's disease pathology. An emerging tool being used to help assess Alzheimer's risk. | — |
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.
Preparation
Labcorp lists no special preparation for this test.
- Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.
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.
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