[Blasterlord2]

Don't think MOH/HSA provides low cost colonoscopy checks at public hospital as _part_ of periodic health screening, so I guess next the best option could be to head to JB or Thailand. China seems to offer the lowest cost, but not sure if their public hospitals entertain foreigners during lull period.

Yes, doing it in China is much cheaper. And yes, their public hospitals entertain foreigners and you pay the same as the locals.