$3K is not exactly cheap for me though, almost 3/4 of my monthly take-home pay.
OK, but you have MediSave dollars don't you?
By the way, it's an "interesting question" whether an Integrated Shield plan pays for a colonoscopy. I think it does if it's classified as a day surgery. And then you can also use MediSave dollars, up to a limit and if you're age 50+. However, when you make a claim under your particular Integrated Shield plan and rider combination you'll be subject to Great Eastern's
claims-adjusted pricing rules. In the scenario you describe (a ~$7,000 colonoscopy from a private medical provider) your rider premiums will increase after you make that claim.
Anticipating the next question, how can you avoid increasing your premiums?
1. Don't make a claim. For example, in most cases the
Singapore Cancer Society's free FIT kits are valid alternatives to colonoscopies as long as you take the FITs annually.
There's also a non-free noninvasive test, brand name "Cologuard," that might be an option. This is technically called a MT-sDNA test, sometimes "FIT-DNA." It's not common yet in Singapore, but it was U.S. FDA approved in 2014. This test looks at DNA in the stool to find evidence of cancer. It's less sensitive than colonoscopies in finding precancerous polyps (which is why you take it, or FITs, more often) but more sensitive than FITs. It's also a little high in false positives. However, if you want the "best" noninvasive test then it's a possible option.
Incidentally, the latest global wisdom seems to be to start checking for colorectal cancers from age 45 (5 years earlier than the prior age 50 general recommendation). The SCS still starts their free FIT kits from age 50, so prior to age 50 you'll have to pay for them. But FIT kits, even if you have to pay for them, are rather inexpensive.
Yet another possible option if you're lucky is that your employer will pay for a colonoscopy when you're 50+. Some employers in Singapore do, particularly those who employ a large number of white color office workers since some of them may be prone to colorectal cancers.
2. Get your colonoscopy from the public medical sector instead of private sector. (But if you're going to do that anyway then why are you attempting to insure for private medical sector care?)
3. "Downgrade" to a lower cost plan. For example, you could switch to TotalCare P Select, a lower cost rider than TotalCare P. TotalCare P Select is still subject to claims-adjusted pricing, but it starts from a lower cost. (The co-insurance is also higher, of course.) Or switch to one of Great Eastern's public hospital Integrated Shield plans and (lowest cost) riders.