TABLE 2.

Pooled testing results as of 9 April 2021^a

Metric		Value	%
No. of pooled tests run		39,297	100
No. of negative poolsb		38,593	98.2
No. of positive poolsc		310	0.8
No. of invalid poolsd		31	0.1
No. of inconclusive poolse		67	0.2
Unsatisfactory specimens (test not performed)
Reason: at least one swab upside down in tube		215	0.6
Reason: lab incident		46	0.1
Reason: sample received >56 h after collectionf		26	0.1
Reason: sample too viscous after rehydration		3	0.01
Reason: tube label data do not match order		2	0.01
Positive pool viral N1 target CT, mean (SD)		26.4 (5.6)
Positive pool viral N1 target CT, range		15.3–37.8
Positive pool viral N2 target CT, mean (SD)		27.9 (6.3)
Positive pool viral N2 target CT, range		15.7–39.8

^aResults are based on a RT-PCR with multiplexed N1, N2, and RP targets as outlined in the assay EUA (EUA200147). C_T, cycle threshold.

^bNegative pools have no detected viral targets and a positive human control target (RP gene).

^cPositive pools have two detected viral targets (N1 and N2).

^dInvalid pools have no detected viral targets and no detected human control target.

^eInconclusive pools have only one viral target detected.

^fAcceptable specimens for testing must be received at the laboratory within 56 h of collection based on FDA stability studies.