Table 2.

Accuracy, sensitivity, and precision of the analytical method for the quantification of PFAS and fluorinated alternatives in urine

	LOD	Precision				Accuracy (%)
		QCL		QCH
	ng/mL	ng/mL	RSD (%)	ng/mL	RSD (%)	Low level	High level
PFPrS	0.1	1.5	6.8	2.8	7.1	97.8±4	96.2±3
PFBS	0.1	1.3	7.8	3.2	8.0	98.7±3	98.1±8
PFHxS	0.1	1.6	8.2	3.7	8.5	98.7±6	93.8±7
PFHpS	0.1	1.5	10.2	3.9	9.5	100.3±6	101.5±5
n-PFOS	0.1	1.3	8.9	3.2	8.8	99.1±4	98.8±2
Sm-PFOS	0.1	0.5	9.5	1.8	8.4	96.7±4	98.2±1
PFBA	0.1	1.6	8.2	3.7	8.5	93.6±2	95.0±8
PFPeA	0.1	1.3	8.9	3.2	8.8	101.0±8	106.2±2
PFHxA	0.1	0.5	10.4	1.5	8.2	102.2±6	103.8±5
PFHpA	0.1	0.5	9.2	1.1	9.8	102.7±3	98.5±6
n-PFOA	0.1	2.8	9.5	5.4	8.8	103.1±2	102.3±5
Sb-PFOA	0.1	1.6	7.6	3.4	10.4	98.5±4	100.1±6
PFNA	0.1	1.4	6.2	4.2	6.6	102.1±5	96.5±4
PFDA	0.1	1.4	8.8	3.6	7.2	102.4±7	99.1±5
PFUnDA	0.1	1.5	10.2	3.5	6.5	97.4±2	97.4±4
HFPO-DA	0.1	1.8	7.4	10.8	9.8	102.6±11	97.5±9
DONA	0.1	1.6	8.2	3.7	8.5	96.5±2	98.3±6
9Cl-PF3ONS	0.1	1.3	8.9	3.2	8.8	104.2±10	103.8±7

Accuracy: n=5; Limit of detection (LOD): n=5; Intraday precision: n=20