A
Stability at RT, Day 1
QC level [ng/ml]	2	4	20	40
	91.9	85.8	86.0	102
86.7	85.7	88.5	102
86.0	85.9	90.1	103
89.2	98.0	90.8	112
% of nominal concentration	88.5	88.9	88.9	104.8
Imprecision [%CV]	2.7	6.1	2.1	4.9
Stability at RT, Day 3
QC level [ng/ml]	2	4	20	40
	88.6	105	101	113
94.1	100	98.5	103
100	101	106	109
99.5	102	102	108
% of nominal concentration	95.6	102.0	101.9	108.3
Imprecision [%CV]	5.3	2.2	3.1	4.1
Stability at RT, Day 7
QC level [ng/ml]	2	4	20	40
	105	103	91.7	109
101	107	100	110
102	108	107	105
93.8	105	109	111
% of nominal concentration	100.5	105.8	101.9	108.8
Imprecision [%CV]	4.7	2.2	7.8	2.6