Mercury, Blood Test
Mercury, Blood Test can be requested without a referral, and this overview covers what to expect. A mercury blood test measures the amount of mercury in your bloodstream. It is usually ordered when someone has known or suspected exposure to mercury, or when symptoms suggest possible mercury toxicity.
- Sample type
- blood
- Category
- Heavy Metal
- Turnaround
- 1-3 business days
- Price
- $196
- Referral
- Not required
A mercury blood test measures the amount of mercury in your bloodstream. It is usually ordered when someone has known or suspected exposure to mercury, or when symptoms suggest possible mercury toxicity.
What it measures
- Total mercury — The overall amount of mercury in the blood sample.
- Inorganic mercury — Mercury from industrial or chemical sources, such as certain workplace exposures.
- Organic mercury — Mercury bound to carbon, commonly from eating certain fish.
- Methylmercury — A specific organic form often linked to fish consumption.
Who it is for
Doctors may order this test for people with workplace exposure, symptoms such as numbness or tremors, or a known spill or release. It may also be used to monitor someone already being followed for mercury exposure.
Preparation
No fasting is usually required. Tell your clinician about recent fish meals, dental work, or any possible mercury exposure, since timing can affect the result.
Results and what they mean
Results are reported as a number, often in micrograms per liter, and are compared with a reference range. Your clinician interprets the result along with your history, symptoms, and other tests. This is general information, not medical advice; discuss your results with a qualified clinician.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the mercury, blood test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast?
No. Fasting is not normally needed for a mercury blood test.
Can eating fish affect the result?
Yes. Recent fish meals can raise blood mercury levels, so tell your clinician what you ate and when.
How long until results are ready?
Typical turnaround is about 1 to 3 business days, though it can vary by lab.
Is this test painful?
It uses a standard blood draw from a vein, which feels like a brief pinch.