Table 1.

Samples provided to the collaborative study participants

Sample number	Product code	Product name
Control	Pool 4	Positive control (XC)
1	10/198	Reference Reagent (S1)
2	10/198	Reference Reagent (S2)
3	Pool 2	Control 2 (C2)
4	10/198	Reference Reagent (S1)
5	12/192	Control 3 (C3)
6	10/198	Reference Reagent (S2)
7	Pool 1	Control 1 (C1)
8	10/198	Reference Reagent (S1)
9	10/198	Reference Reagent (S2)