Organophosphate Pesticide Metabolite Screening in Urine (e.g., Dimethoate, Chlorpyrifos)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you work in agriculture, gardening, pest control, or live in an area with known pesticide use. It could also be part of a broader health evaluation if you’ve experienced symptoms like headaches, nausea, or neurological issues that might suggest exposure.

What the Test Measures

The test detects specific breakdown products (metabolites) of common organophosphate pesticides, which are chemicals used to kill insects. These metabolites appear in urine after exposure and can help identify recent or past contact with these substances.

Sample Collection and Preparation

You’ll collect a urine sample in a sterile container, typically provided by your lab. The sample should be submitted as directed, often within a specified timeframe (e.g., 24 hours) if timed collection is required. Avoid foods, drinks, or personal care products that might interfere with results.

What the Results Mean

Positive results indicate recent exposure to organophosphate pesticides. The presence of these metabolites doesn’t necessarily mean you’re currently at risk, but it signals when to discuss your exposure with your doctor. Results are qualitative (present/absent) unless specified otherwise.