Table 1.

Panel composition and results of pre-distribution testing at reference laboratories

Virus	Strong positive (A)		Positive (B)		Low positive (C)
	Dilution	Ct	Dilution	Ct	Dilution	Ct
Influenza virus Aa	10E−3	27	10E−5	34.5	10E−6	37.9
Influenza virus Ba	10E−3	25.3	10E−5	33.4	10E−6	37.3
Parainfluenza virus 1b	10E−3	35.8	10E−4	38.9	10E−5	44.9
Parainfluenza virus 3b	10E−3	28.1	10E−4	33.5	10E−5	35.8
Respiratory syncytial virusa	10E−3	27.4	10E−5	35.7	10E−6	38
Human metapneumovirusa	10E−1	24.5	10E−3	32.5	10E−4	37.6
Human rhinovirus 16a	10E−3	23.8	10E−5	31.1	10E−6	36.2
Human rhinovirus 72b	10E−3	24.2	10E−5	30.1	10E−6	34.7
Human rhinovirus 90a	10E−3	26.1	10E−5	32.8	10E−6	36.5
Adenovirus 4b	10E−2	31.8	10E−4	37.7	10E−5	41.8
Adenovirus 7b	10E−2	30.8	10E−4	38.2	10E−5	41.0
Human coronavirus 229Eb	10E−3	27.6	10E−5	34	10E−6	36.6
Human coronavirus OC43a	10E0	30.7	10E−1	33.5	10E−2	37.2

C_t: cycle threshold values.

^aC_t values shown are a mean of results from two laboratories.

^bC_t values shown are a mean of results from a single laboratory.