TABLE V. Comparison Viral Load Peak at Different Serial Samples.

Ref.	Serial samples	Target	Viral load effective measurement
[118] [119]	Sputum	Nucleic acid	<15 days post-symptom onset (peak at 5–6 days post-symptom onset)
[118] [119]	Throat swab	Nucleic acid	<8 days post- symptom onset (peak at 5–6 days post-symptom onset)
[119]	Nasal swab	Nucleic acid	<14 days post-symptom onset
[80]	Nasal swab	Antigen	1–3 days pre-symptom onset and 5–7 days post-symptom onset
[87], [120]	Saliva	Nucleic acid	<10 days post-symptom onset
[68]	Blood	Antibody	≥14 days post-symptom onset
[121]	Urine	Nucleic acid	At day 12 and day 24 post-symptom onset
[122]	Feces	Nucleic acid	11 (7–13) days post-symptom onset