Table 1.

List of naso-/oropharyngeal swabs tested

Sample No	PCR [Ct value)	Virus variant	Remarks
1	13.53	Alpha	Frozen
2	13.73	Delta	Frozen
3	18.06	Delta	Frozen
4	16.00	Delta	Frozen
5	17.40	Delta	Frozen
6	18.60	Delta	Non-frozen
7	14.30	Delta	Non-frozen
8	17.10	Delta	Non-frozen
9	16.60	Omicron	Frozen
10	Negative	-	Frozen
11	Negative	-	Frozen

Frozen = -80 °C

Non-frozen = storage at room or refrigerator temperature