Table 4.

Fentanyl Analog Concentrations

	Acetyl (n=7)	Acryl (n=2)	Furanyl (n=2)	4-ANPP (n=2)	Carfentanil (n=1)	U-47700 (n=1)	PFB† (n=1)
2013 (n=0)
2014 (n=2)	140.0 ng/mL
	14.0 ng/mL
2015 (n=2)	150.0 ng/mL
	220.0 ng/mL
2016 (n=11)	4.2 ng/mL	0.3 ng/mL	5.3 ng/mL*	0.12 ng/mL‡	0.20 ng/mL‡	0.22 ng/mL‡	1.1 ng/mL‡
	97.1 ng/mL	0.95 ng/mL	Not Quantified†	5.5 ng/mL*
	Not Quantified†

^*Mixture in decedent #1

^‡Mixture in decedent #3

^†Mixture in decedent #2

^§Para fluorobutryl fentanyl