Skip to content

Serum or plasma aflatoxin mass concentration (24-hour urine)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of aflatoxin, a naturally occurring toxin produced by certain molds, in your urine over a 24-hour period. It helps identify exposure to aflatoxins, which can be harmful to the liver and other organs.

Quick summary

["Detects aflatoxin exposure in urine to assess potential liver or organ risk."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
32657-9
Short code
Aflatoxin IgA SerPl-aCnc
Synonyms
Aflatoxin IgA SerPl-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Why This Test Is Done

Your healthcare provider may order this test if you’ve had recent exposure to moldy foods, particularly peanuts, corn, or other crops that can grow aflatoxins. It’s also used in research or occupational health settings where exposure risks are higher.

What to Expect Before the Test

No special preparation is needed. You’ll provide a 24-hour urine sample, typically collected in a container provided by your lab. Follow instructions carefully to ensure accurate results.

What the Test Results Mean

Results indicate the total aflatoxin present in your urine over 24 hours. Elevated levels may suggest recent exposure, but they don’t always mean immediate harm. Results are used to guide further evaluation or prevention strategies.

Possible Causes of Elevated Results

Elevated aflatoxin levels can occur after consuming contaminated food, working in environments with moldy crops, or living in areas with high humidity/mold risk. Chronic exposure over time may increase health risks.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Aflatoxin Exposure and Health Risks

Short name

Aflatoxin Urine Test

Frequently asked questions

What symptoms might I experience if aflatoxin levels are high?
Symptoms of acute aflatoxin exposure are rare but may include nausea, vomiting, or liver-related issues like jaundice. Chronic exposure is more concerning, as aflatoxins are known carcinogens and can damage the liver over time. Your healthcare provider will assess overall health and recommend follow-up if needed.
How long does it take to get results, and can I repeat the test?
Results typically take 1–2 weeks. If your provider suspects ongoing exposure, they may recommend retesting or additional tests, such as liver function studies.
Can I prevent aflatoxin exposure?
Yes! Avoid eating moldy or spoiled foods, especially peanuts, corn, or nuts. Store food properly, check for mold, and wash fruits/vegetables thoroughly. If you work in high-risk environments, follow safety protocols to minimize exposure.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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