used to visit normal GP who uses Pathlab lab services.
then my friend told me that you can actually head down to Pathlab for health screening.
gave them a call and the prices was surprising affordable.
basic/classic/deluxe - 120/170/220
there is 20% discount on-going, so the price is 96/136/176.
they have medical professional to explain to you the result too.
https://www.pathlabs.com.sg/18ks-profile.php#
their deluxe package has a few cancer marker tests.