Serum or plasma concentration of wavelet entropy (a measure of signal complexity) in a 24-hour fluid sample
This test measures the complexity of your heart’s electrical signals over a 24-hour period using a special analysis of your blood or urine sample.
["Wavelet entropy helps assess irregularities in your heart rhythm that may not be detected by standard tests."]
Key facts at a glance
- LOINC
- 10112-1
- Short code
- ST wave ED L-V1
- Synonyms
- ST wave ED L-V1
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ekg
- 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 This Test Measures
Wavelet entropy analyzes patterns in your body’s natural signals (like heartbeats or fluid chemistry) to detect subtle irregularities. Unlike traditional heart rhythm tests, it looks at the complexity of these signals, which can reveal hidden patterns in conditions like arrhythmias or metabolic disorders.
Why It’s Done
Your doctor may order this test if they suspect a condition affecting your heart’s electrical activity or fluid balance, such as certain types of arrhythmias or metabolic disturbances that don’t show up on standard tests.
Sample Collection and Preparation
You’ll provide a 24-hour urine or blood sample (collected over time) that’s analyzed for signal complexity. The test doesn’t require fasting or special preparation beyond following your usual routine.
What to Expect During Testing
The test involves collecting samples at home or in a lab over 24 hours. Results are processed to identify patterns in signal complexity, which may indicate underlying health concerns.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Wavelet entropy may help identify subtle irregularities in heart rhythm or fluid dynamics that traditional tests miss. It could support diagnosis of conditions like certain arrhythmias, metabolic imbalances, or chronic stress-related changes in bodily signals.
Frequently asked questions
Why might my doctor recommend this test?
How long will it take to get results?
Can I eat or drink normally before 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