A CT abdomen is not your first test here, and radiation is not the real issue - a normal CT will simply leave you where you are. Six years of alternating mushy and formed stools with right lower abdominal pain fits IBS, but weight loss and progressive weakness are not IBS features and must be sorted out first. Get CBC, ESR/
CRP,
ferritin,
B12,
thyroid, celiac serology and a stool calprotectin done. If calprotectin or CRP is high, colonoscopy is the correct next step, not a scan. Book a consult with me on Practo or at Synergy Multispeciality Hospital, Miraj with these reports and we will settle this properly.
Next Steps
Start with blood work rather than a scan: CBC, ESR/
CRP,
ferritin,
B12,
thyroid, celiac serology, and a stool test with faecal calprotectin. If calprotectin or CRP is high, you need a colonoscopy, not a CT. Meanwhile try a low-FODMAP style diet for six weeks, fixed meal times, 2-3 litres of fluid, extra salt if your BP runs low, and stand up slowly. Share these reports with me on a Practo consult and I will tell you clearly whether any scan is justified. Do not delay a hospital visit if there is blood in stool, ongoing weight loss, night fevers or pain that wakes you from sleep.