Table 3.

Stability of ZMC1 in human plasma under different storage conditions (n = 3)

Storage conditions	Concentration (ng/mL)	Measured concentration (ng/mL)	RSD (%)	Bias (%)
Short-term (2 h on ice)	500.0	493.9	3.9	−1.3
	31.3	29.0	0.7	−7.0
	3.9	3.7	0.4	−0.4
Long term (30 days at −80 ºC)	500.0	516.4	4.8	3.2
	31.3	30.3	11.2	−2.9
	3.9	3.9	1.9	−0.01
Three freeze– thaw cycles	500.0	553.1	553.1	10.6
	31.3	29.0	28.0	−10.4
	3.9	4.1	4.1	4.8
Autosampler for 24 h	500.0	550.7	1.6	10.0
	31.3	35.4	0.7	13.0
	3.9	4.1	2.3	4.0