Dinoflagellate Toxin Measurement (Serum/Plasma)
This test detects the presence of toxins produced by certain microscopic algae called dinoflagellates, which can occur in water sources and may pose health risks if ingested or exposed to skin.
["This test helps assess potential exposure to harmful algal toxins from contaminated water."]
Key facts at a glance
- LOINC
- 10661-7
- Short code
- Dinoflagellate Wat Micro
- Synonyms
- Dinoflagellate Wat Micro
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- microscopy-light
- 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 Is This Test Measuring?
Dinoflagellates are single-celled organisms that can release toxins when they multiply rapidly (a phenomenon called 'red tide'). These toxins can be harmful if ingested or absorbed through the skin. This test measures the concentration of these toxins in your blood or plasma, which may indicate exposure to contaminated water, especially in recreational or occupational settings involving water activities.
Why Might You Need This Test?
Your healthcare provider may order this test if you have symptoms like nausea, vomiting, diarrhea, skin irritation, or respiratory issues after exposure to water suspected of containing dinoflagellate toxins. It may also be used in environmental monitoring or occupational health evaluations for individuals working near water sources.
What Does a Positive Result Mean?
A positive result suggests the presence of dinoflagellate toxins in your blood or plasma, which could indicate recent exposure. However, symptoms may not appear immediately. Further evaluation by a healthcare provider is needed to determine the best course of action, such as medical treatment or further investigation of exposure sources.
What Are Common Symptoms?
Symptoms of dinoflagellate toxin exposure can vary but may include gastrointestinal distress (e.g., vomiting, diarrhea), skin irritation, or respiratory symptoms like coughing or difficulty breathing. Not everyone exposed will experience symptoms, so this test helps monitor potential risk.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Dinoflagellate toxins can cause acute poisoning, particularly in individuals who consume contaminated water or come into contact with affected water. Early detection through this test can guide preventive or therapeutic measures, such as avoiding further exposure or seeking medical attention for symptoms. It is also critical in public health monitoring to identify and mitigate risks in water bodies.
Short name
Dinoflagellate Toxin
Frequently asked questions
How Is This Test Performed?
What Are Possible Results?
How Often Should This Test Be Done?
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