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CT KUB (stone protocol)

Kidney and ureter stones, without contrast.

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

SmartAnswer by DigiNepal SI

Kidney and ureter stones, without contrast. What it shows: Kidney and ureter stones, without contrast. generated by SI from cited sources · general information, not a diagnosis · consult a health professional

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

What it shows

Kidney and ureter stones, without contrast.

Why it is done

Severe flank pain (renal colic).

Preparation

Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.

Radiation & safety

Typical effective dose 2 to 5 (low dose) mSv, similar to about 8 months to 1.5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

How long it takes

5 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

Consult a doctor to interpret results — a single test does not make a diagnosis.

Related conditions

entry-health-condition-ckd

Where to get this near you

🏥 Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

Why is CT KUB (stone protocol) done?
Severe flank pain (renal colic).

How do I prepare for CT KUB (stone protocol)?
Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.

Is CT KUB (stone protocol) safe in pregnancy?
Typical effective dose 2 to 5 (low dose) mSv, similar to about 8 months to 1.5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

Emergency — call📞 102