6 doctors weighed in:
I have consistent kidney stones weekly/monthly but every time I go for a CT they don't show up, what is going on?
6 doctors weighed in

4 doctors agree
In brief: CT Stone Protocol
Some ct scans that are done, if not calibrated for thin cuts, may miss symptomatic stones.
However, if you are having recurrent symptoms without any proven stones, then i'd look for other answers. Ct, done properly, is about 99% sensitive for stone. The only stones that don't show up on ct are Crixivan (indinavir) stones. If you take that medication, let your doctor know. If not, it's likely not stones.

In brief: CT Stone Protocol
Some ct scans that are done, if not calibrated for thin cuts, may miss symptomatic stones.
However, if you are having recurrent symptoms without any proven stones, then i'd look for other answers. Ct, done properly, is about 99% sensitive for stone. The only stones that don't show up on ct are Crixivan (indinavir) stones. If you take that medication, let your doctor know. If not, it's likely not stones.
Dr. Robert Donato
Dr. Robert Donato
Thank
Dr. Tarek Naguib
Internal Medicine - Nephrology & Dialysis
1 doctor agrees
In brief: Uric acid?
Have you trapped any of the passed stones to submit for analysis? Some stones called uric acid stones are translucent on x-ray.
Ct scan is a form of xr. If this is the case this is treatable. Another way is to collect 24 hour urine to see if your uric acid excretion in urine is excessive. This will also show other problems that you may have.

In brief: Uric acid?
Have you trapped any of the passed stones to submit for analysis? Some stones called uric acid stones are translucent on x-ray.
Ct scan is a form of xr. If this is the case this is treatable. Another way is to collect 24 hour urine to see if your uric acid excretion in urine is excessive. This will also show other problems that you may have.
Dr. Tarek Naguib
Dr. Tarek Naguib
Thank
1 comment
Dr. Robert Donato
CT detects uric acid stones easily.
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