Left Ventricular Ejection Fraction by Planar Imaging (Biplane Method)
This test measures how effectively your heart pumps blood out of your left ventricle, a key indicator of heart function. It uses X-ray imaging to assess ejection fraction, often performed during an echocardiogram or cardiac catheterization.
["Helps doctors diagnose and monitor heart conditions like heart failure or weakened heart muscle."]
Key facts at a glance
- LOINC
- 79991-6
- Short code
- LV EF biplane MOD
- Synonyms
- LV EF biplane MOD
- 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-d-calculated-by-biplane-method-of-disks
- 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
What Does This Test Measure?
The left ventricular ejection fraction (LVEF) evaluates the percentage of blood pumped out of your heart’s left ventricle with each heartbeat. A lower LVEF may suggest impaired heart function, while a higher LVEF often indicates better pumping efficiency. This test is critical for identifying conditions like cardiomyopathy or heart failure.
Why Is This Test Important?
LVEF is a vital measure for managing heart disease. It helps doctors determine if you need treatment, such as medications, lifestyle changes, or procedures, to improve heart function and reduce risks like heart failure or stroke.
How Is This Test Done?
This test typically involves imaging techniques like echocardiography (ultrasound) or cardiac catheterization with contrast dye. Planar imaging captures X-ray images from two angles (biplane) to calculate ejection fraction accurately. Blood samples (whole blood) may be collected for additional diagnostic support, but the primary method is imaging.
What Are Common Results and Next Steps?
Results are usually expressed as a percentage (e.g., 40–60%). A lower than expected LVEF may prompt further testing or treatment adjustments. Your doctor will discuss findings in the context of your overall health and symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: LVEF plays a central role in diagnosing and guiding treatment for heart conditions. Low LVEF is often associated with heart failure, while high LVEF may indicate normal or compensated heart function. Regular monitoring helps manage long-term risks and optimize care.
Short name
LV Ejection Fraction (Biplane)
Frequently asked questions
What does a low LVEF mean for my heart health?
Do I need to prepare for this test?
Can lifestyle changes improve my LVEF?
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