Cholinesterase Serum Test
A cholinesterase blood test helps employers monitor employees who work with pesticides that contain cholinesterase inhibitors. These chemicals are commonly found in organophosphate and carbamate pesticides used in agriculture, landscaping, pest control, and other industries. Regular cholinesterase testing can help employers monitor employee health, identify potential workplace exposure, and support a safer work environment.
Unlike tests that measure the amount of a pesticide in the body, a cholinesterase test measures the activity of an important enzyme in the blood. Employers often compare an employee's results over time to identify changes that may suggest pesticide exposure. Health Street offers nationwide testing with secure online reporting, making it easy to manage employee health records and occupational health programs.
Schedule a Cholinesterase Blood Test today by registering online or calling (888) 378-2499.
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About Our Cholinesterase Blood Test
What Is a Cholinesterase Blood Test?
A cholinesterase blood test measures the activity of cholinesterase, an enzyme that helps the nervous system function properly. Certain pesticides contain cholinesterase inhibitors, which reduce the activity of this enzyme. Measuring cholinesterase levels helps employers monitor employees who regularly work with these chemicals.
This product is a cholinesterase serum test, meaning the laboratory measures cholinesterase activity using a blood sample. The test is commonly included in occupational health programs for employees who mix, load, apply, or handle organophosphate and carbamate pesticides.
Many employers establish a baseline result before employees begin working with these pesticides. Future cholinesterase testing can then be compared to the baseline, making it easier to identify meaningful changes that may be related to workplace exposure.
Research from NIOSH has shown that baseline and periodic cholinesterase testing are valuable tools for monitoring employees who work with organophosphate and carbamate pesticides.
What Are Cholinesterase Inhibitors?
Cholinesterase inhibitors are chemicals that slow or block the normal activity of the cholinesterase enzyme. While some cholinesterase inhibitors are used as medications to treat certain medical conditions, others are active ingredients in pesticides used to control insects and other pests.
Employees may encounter a cholinesterase inhibitor while mixing pesticides, filling spray equipment, applying products in the field, cleaning equipment, or handling treated crops and materials. Because repeated exposure can reduce cholinesterase activity, employers often include routine monitoring as part of their occupational health and pesticide safety programs.
Biological monitoring does not replace safe work practices, but it gives employers another way to evaluate whether existing safety procedures are effectively protecting employees.
Who Should Have Cholinesterase Testing?
A cholinesterase test is commonly recommended for employees whose jobs involve regular exposure to organophosphate or carbamate pesticides.
Industries and occupations that commonly use cholinesterase testing include:
Some employers also include seasonal workers, temporary employees, or contractors in their monitoring programs when they regularly work with cholinesterase-inhibiting pesticides.
Why Employers Monitor Cholinesterase Levels
Employers use cholinesterase testing because exposure to certain pesticides may not be immediately obvious. Employees can experience reduced cholinesterase activity before they recognize that exposure has occurred.
Monitoring employees over time helps employers:
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Identify possible pesticide exposure
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Compare results with established baseline levels
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Evaluate workplace safety procedures
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Monitor employees during pesticide application seasons
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Support occupational health programs
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Promote a safer work environment
Understanding Cholinesterase Inhibitors Side Effects
Many employers ask about cholinesterase inhibitors side effects because employees who work around these pesticides may be concerned about their health. Exposure does not always produce immediate symptoms, and some employees may experience no noticeable effects during the early stages of exposure.
When exposure is significant, possible symptoms may include diarrhea, blurry vision, seizures, and even death.
These symptoms are not unique to pesticide exposure and can have many different causes. A cholinesterase blood test provides objective information that occupational health providers can use when evaluating employee exposure, together with workplace history and job responsibilities.
How Does a Cholinesterase Serum Test Work?
Scheduling a cholinesterase serum test is simple. After registering with Health Street, employees visit one of our nationwide collection sites where a trained healthcare professional collects a blood sample.
The sample is sent to a certified laboratory for analysis of cholinesterase activity. Once testing is complete, employers receive secure online access to results through Health Street's GLASS portal.
Many employers compare current results with an employee's baseline test to monitor changes over time. This approach provides valuable information about workplace exposure while helping employers maintain organized occupational health records.
Occupational health experts generally recommend comparing current results with an employee's baseline because changes over time provide more meaningful information than a single laboratory result.
Frequently Asked Questions
Why is a baseline cholinesterase test important?
A baseline cholinesterase test measures an employee's normal enzyme activity before routine pesticide exposure begins. Future test results can then be compared with the baseline to identify meaningful changes over time.
How often should employees have cholinesterase testing?
Testing frequency depends on job duties, pesticide use, employer policies, and any state or occupational health requirements. Many employers perform testing before the pesticide application season and continue monitoring employees throughout the season.
Does a cholinesterase blood test measure pesticides?
No. A cholinesterase blood test does not measure the amount of pesticide in the body. Instead, it measures how well the cholinesterase enzyme is functioning, which may change after exposure to certain pesticides.
Can employers schedule testing for multiple employees?
Yes. Health Street coordinates cholinesterase testing for businesses of every size, whether you need testing for one employee or an entire workforce.
Can this test be combined with other occupational health services?
Yes. Many employers combine a cholinesterase serum test with occupational physicals, respirator medical evaluations, pulmonary function testing, hearing exams, vision exams, vaccinations, and other laboratory services.
What happens if cholinesterase activity is lower than expected?
Lower cholinesterase activity should be reviewed by an occupational health provider. Depending on the situation, employers may recommend follow-up testing, review workplace safety procedures, or temporarily remove employees from handling cholinesterase-inhibiting pesticides until additional evaluation is completed.
Is the blood collection process difficult?
No. A healthcare professional collects a small blood sample from a vein in the arm. The specimen is then sent to a certified laboratory for analysis.
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