Ricin Toxin, Qualitative, Serum
This test looks for the presence of ricin toxin in a serum sample. It is a qualitative screen, meaning it reports whether ricin is detected or not detected rather than a precise amount.
["A serum ricin toxin screen helps determine whether a person has been exposed to this dangerous plant-derived toxin."]
Key facts at a glance
- LOINC
- 41639-6
- Short code
- Ricin Tox IgM Ser Ql IF
- Synonyms
- Ricin Tox IgM Ser Ql IF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- CPT
- 82784
- 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 Ricin?
Ricin is a highly toxic substance that occurs naturally in the seeds of the castor oil plant. It can be harmful if it is inhaled, swallowed, or injected, and it can cause serious illness. Because of this danger, detecting ricin in the body is important in suspected exposure situations.
Why This Test Is Used
The test is typically ordered when a person is suspected of being exposed to ricin, either through an accidental event or a deliberate act. It helps clinicians and public health authorities confirm whether exposure has occurred so that appropriate care and safety measures can be put in place.
How the Sample Is Collected
A blood sample is collected from a vein in the arm and processed so that the serum portion can be analyzed. In some situations, other specimens may also be collected depending on the type of suspected exposure. Collection is performed by a trained health care professional.
Understanding the Results
Because this is a qualitative screen, results are generally reported as detected or not detected. A detected result suggests that ricin was found in the sample, while a not detected result suggests it was not found at the time of testing. Results are interpreted together with the person's symptoms, exposure history, and other testing.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Ricin Toxin Screen
Frequently asked questions
Does a detected result mean I will definitely become seriously ill?
How long does it take to get results?
Can this test tell how much ricin I was exposed to?
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