Table 3.

Stability of Analytes in Human Plasma (n=5)

Condition	Nominal Concentration	Mean ± SD	RSD (%)	RE (%)
	(ng/mL)
Room Temperature, 12 h	12.5	12.59±0.77	6.08	0.75
	3750	3702.9±124.5	3.36	−1.26
Autosampler 4 °C, 12 h	12.5	12.58±2.12	16.88	0.64
	3750	3374.82±184.64	5.47	−10
5 Freeze Thaw Cycles	12.5	13.61±1.18	8.68	8.89
	3750	3593.82±132.93	3.7	−4.16
−20°C, 4 Weeks	12.5	13.32±1.37	10.29	6.56
	3750	3643.25±152.16	4.18	−2.85