Beta Amyloid 42/40 Ratio, CSF
نسبة بيتا أميلويد 42/40، سائل نخاعي
Sample Type
🧪 CSF
Results In
⏱ 12-15 Days
Fasting
✅ Not Required
Parameters
📊 1
What is Beta Amyloid 42/40 Ratio, CSF?
This test measures the ratio of two specific forms of beta-amyloid proteins (Aβ42 and Aβ40) in your cerebrospinal fluid (CSF). An altered ratio can indicate changes in the brain associated with certain neurodegenerative diseases.
Why is this test important?
A decreased Aβ42/Aβ40 ratio in CSF is a key biomarker for Alzheimer's disease, as it reflects the accumulation of amyloid plaques in the brain. It aids in the early diagnosis and differential diagnosis of dementia.
How to Prepare
A lumbar puncture (spinal tap) is required to collect the CSF sample. Your doctor will provide specific instructions regarding this procedure.
Frequently Asked Questions
Do I need to fast before my blood test?▼
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Medical Disclaimer: The information on this page is for educational purposes only and should not be considered medical advice. Always consult your physician or qualified healthcare provider for diagnosis and treatment. Test results should be interpreted by a qualified medical professional.