Johnsongrass Mutagenicity Assay (Plasma/Serum)
This test measures the potential of johnsongrass exposure to cause genetic damage in your blood cells. It helps assess whether certain substances in your system may increase your risk of hereditary health issues.
["Assesses genetic risk from environmental exposures like johnsongrass."]
Key facts at a glance
- LOINC
- 102599-8
- Short code
- Johnson grass smut IgE RAST
- Synonyms
- Johnson grass smut IgE RAST
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rast
- CPT
- 84484
- SNOMED
- 302774002
- 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
The test evaluates the mutagenic activity in your plasma or serum, which refers to the ability of substances to alter DNA structure. This is typically done through specialized laboratory methods that detect genetic damage indicators, such as chromosomal abnormalities or mutations.
Why It’s Ordered
Your healthcare provider may recommend this test if you have been exposed to johnsongrass or other potential mutagens, particularly if you have a family history of genetic disorders or are at higher risk for hereditary conditions. It may also be part of a broader evaluation for occupational or environmental health concerns.
Sample Collection and Preparation
A blood sample is collected in a special tube that separates plasma or serum from blood cells. This liquid portion is then analyzed in a laboratory setting using advanced techniques to detect mutagenic effects.
What to Expect Before the Test
No special preparation is typically required, but you may be asked to avoid certain medications or substances that could interfere with the test results. Always follow your healthcare provider’s instructions.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results suggest that your system may be experiencing genetic damage from environmental exposures, which could increase the risk of hereditary conditions like cancer or birth defects. While this test is not diagnostic, it can highlight areas for further investigation or precautionary measures. Negative results indicate no detectable mutagenic activity in your sample.
Short name
Plasma/Serum Mutagenicity Test
Frequently asked questions
How is this test different from a standard genetic test?
What does a positive result mean?
Can I take anything 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 17, 2026. · Read our editorial policy