There are three PCR tests pre-departure within 72 hours, upon arrival, and on the 6/7 day.

I think it needs to check before you leave through VTL.

Hope it helps you 😘

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1. Pre-departure

https://www.moh.gov.sg/licensing-and-regulation/regulations-guidelines-and-circulars/details/list-of-covid-19-swab-providers

2. Upon arrival 

Need to make an appointment at the below link

https://safe2gopass.com/

3. 6/7 day

Should visit a clinic to get the test

I summarized near Gangnam, Seoul

a. Samkwang Medical Laboratories 

- Name in Korean: 삼광의료재단 

- Address : 57, Baumoe-ro 41-gil, Seocho-gu, Seoul

- Phone No : 02-3497-5100

b. EWHA Medical Clinic (EWHA Medical Laboratory)

- Name in Korean : 이화의원

- Address : Namhyun B/D 52, Nonhyeon-ro, Gangnam-gu, Seoul

- Phone No : 02-3462-2233

c. Seoul Branch Of Korean National Tuberculosis Association

- Name in Korean : 대한결핵협회 서울지부 

- Address : 57, Baumoe-ro 6-gil, Seocho-gu, Seoul

- Phone No : 02-2085-0821