How to use this tool
Follow these steps to create a personalized exposure report based on your PFAS test results. Your report will include graphs and information to help you understand and reduce your exposure to PFAS.
Your results are anonymous, and we do not save the data you enter into the tool. Read more about how we protect your privacy here.
Step 1: Find your PFAS test results. You may have received these from your local public water utility, private well testing, or a blood testing program. With this tool, you will be able to create a report for your blood results, water results, or both. Don’t have results yet? Learn more about ways to get your blood or water tested.
Step 2: Look for the following three things on your test results: (1) the name of the chemical that was tested (for example, PFOA or PFOS), (2) the amount of the chemical that was found (usually called "Result"), and (3) the units (for example, ng/L or ppt).
- Click to learn more about units
- parts per billion, or ppb
- parts per trillion, or ppt
- micrograms per liter, or μg/L
- nanograms per liter, or ng/L
- nanograms per milliliter, or ng/mL
PFAS levels are reported as a number and unit of measure. The number and units tell you how much of the chemical was found in your sample. Different labs may report PFAS levels using different units. Enter your results exactly as shown on your report.
Common units in lab reports:
Note that 1 µg/L = 1 ng/mL = 1,000 ppt = 1,000 ng/L
Step 3: Enter your test results on the "Enter Your Data" page and click "Generate Report." If you need help reading your test results, click below to see examples of water and blood test reports.
- Click to see example reports
Example Water Report
This sample water report shows results for six PFAS chemicals along with explanations of common terms used by labs.
Example Blood Reports
Tip #1: If your report shows two forms of PFOA or PFOS, you may need to add them together before entering your results.
PFOA and PFOS are measured in blood in two different forms (called isomers): a linear form and a branched form. Your report might show one result for these two forms combined (for example, “Total PFOA”), separate values for each form, or both. If your report only shows these forms separately, you should add the numbers for the linear and branched forms together before entering it into the tool.
Below is an example blood report from Quest Health where the two forms of PFOS are reported separately. The total PFOS is 1.18 + 1.36 = 2.54 ng/mL for PFOS.
Tip #2: Use your serum results with this tool.
Labs can measure PFAS in whole blood or in blood serum (the clear part of blood after the red blood cells have been removed). This tool is designed for serum results. If you had a whole blood test instead, make sure to enter your “serum equivalent” results as shown below.
Below is an example blood report from EmpowerDX. Choose the results in the "Serum Equivalent" column. In this example, enter 42 ng/mL for PFOA, 2.09 for PFOS, and "ND" for PFNA, with a reporting limit of 0.20.
Tip #3: Use your plasma results with this tool.
If you have results for plasma instead of serum, you can enter your plasma results directly into the tool. In general, PFAS levels in plasma are similar to what they would be in serum.