Cerebrospinal Fluid Middle Cerebral Artery Blood Flow Velocity (Quantitative)
This test measures the speed of blood flow in the middle cerebral artery, which supplies blood to parts of your brain. It helps assess blood circulation and may be used to evaluate conditions affecting brain blood flow.
["Blood flow velocity in the middle cerebral artery can help detect or monitor vascular issues in your brain."]
Key facts at a glance
- LOINC
- 12000-6
- Short code
- Cerebral a Middle PI DOP
- Synonyms
- Cerebral a Middle PI DOP
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- us-doppler
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms like sudden weakness, numbness, or vision changes that could indicate a stroke or other vascular problems. It may also be used during evaluations for migraines, brain tumors, or other neurological conditions that affect blood flow.
What to Expect Before the Test
No special preparation is needed. You may be asked to lie down on an examination table while a small probe is gently placed on your head to measure blood flow. The procedure is quick and painless.
What the Test Involves
The test uses ultrasound waves to measure blood flow velocity in the middle cerebral artery. A technician will apply a gel to your head and move the probe to the correct location. The results are recorded and analyzed by a specialist.
What the Results Mean
Results help determine if blood flow is normal or if there are signs of reduced or abnormal flow, which could indicate conditions like stenosis (narrowing of blood vessels), aneurysms, or other vascular issues. Your provider will discuss findings with you.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal blood flow velocities in the middle cerebral artery may signal underlying vascular problems that require further evaluation or treatment. Early detection can help prevent complications such as strokes or other neurological damage.
Short name
Middle Cerebral Artery Blood Flow Velocity (CSF)
Frequently asked questions
What does a normal result mean?
What if the test shows abnormal blood flow?
How often should I get this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy