PFAS TESTING SERVICE IS CURRENTLY NOT AVAILABLE.

When you purchase this water testing service, the standard analysis (for $625) is for method 537.1. You may choose to upgrade to method 533 by selecting the upgrade option below (upgrade cost is $50). Please see the method descriptions below for an overview of the compounds included with the testing methods.     WE OFFER TWO PFAS TEST METHODS

• Method 537.1 includes 18 PFAS compounds.

• Method 533 includes 25 PFAS compounds.

EPA method 533 is a compliment to method 537.1, including an additional 11 compounds and excluding 4 compounds from 537.1. When used together, twenty-nine compounds can be tested in drinking water. All of these can be visualized in the table below, showing the acronyms for each compound and what methods they are tested in. Specifically, method 533 focuses on PFAS compounds that have short carbon chains, which are those with carbon lengths of C4 to C12.

EPA Method 533 & 537.1 COMPOUNDS
Present in EPA 533 & 537.1	Only in EPA 533	Only in EPA 537.1
HFPO-DA	4:2 FTS	NEtFOSAA
PFBS	6:2 FTS	NMeFOSAA
PFDA	8:2 FTS	PFTA
PFDoA	NFDHA	PFTrDA
PFHpA	PFBA
PFHxS	PFEESA
PFHxA	PFHpS
PFNA	PFMPA
PFOS	PFMBA
PFOA	PFPeA
PFUnA	PFPeS
11 CI-PF30UdS
9 CI-PF30NS
ADONA
Source: https://sampleprep.biotage.com/expandyourhorizon/the-difference-between-epa-method-533-vs-537.1

  For a complete list of compounds for each testing method, see the descriptions listed at the bottom of this page.