TABLE 1.

Comparison of provider-collected NP swabs to patient-collected MT swabs and patient-collected saliva specimens for detection of SARS-CoV-2 RNA by real-time PCR

Sample type and SARS-CoV-2 result	No. of NP swabs with a SARS-CoV-2 result of:
	Detected	Indeterminate	Undetected
MT swab
Detected	29	0	3a
Indeterminate	0	0	0
Undetected	3b	1c	245
Saliva
Detected	28	0	2d
Indeterminate	2e	0	2f
Undetected	2g	1h	244

^aOne of these 3 samples repeated as detected (i.e., positive) in both the NP and MT swabs. The remaining two samples repeated as undetected (i.e., negative) in both the NP and MT swabs. Both MT swabs had an initial Cp value of 35.0, suggesting that a low level of SARS-CoV-2 RNA was present in these specimens.

^bOne of these 3 samples repeated as detected in both the NP and MT swabs. The remaining two samples repeated as detected in the NP swab and undetected in the MT swab. Both NP swabs had an initial Cp value of 35.0, suggesting that a low level of SARS-CoV-2 RNA was present in these specimens.

^cThis MT swab sample repeated as undetected, while the NP swab was indeterminate upon repeat testing.

^dOne of these samples repeated as detected in both the NP swab and saliva specimen, while the second sample repeated as undetected in the NP swab and indeterminate in the saliva specimen. The saliva specimen had an initial Cp value of 35.0, suggesting that a low level of SARS-CoV-2 RNA was present in this specimen.

^eOne of these samples repeated as detected in both the NP swab and saliva specimen, while the second sample repeated as detected in the NP swab and indeterminate in the saliva specimen.

^fOne sample repeated as undetected in both the NP swab and saliva specimen. The second sample repeated as undetected in the NP swab and detected in the saliva specimen.

^gBoth saliva specimens repeated as undetected, while both NP swabs were detected upon repeat testing. Both NP swabs had an initial Cp value of 35.0, suggesting that a low level of SARS-CoV-2 RNA was present in these specimens.

^hThe NP swab repeated as indeterminate, while the saliva specimen repeated as undetected upon repeat testing.