Urinary Stones (Kidney Stones)

Urinary Stones (Kidney Stones) - Diagnosis

Several tests will be performed when you seek a urologic specialist.

Imaging:

The gold standard investigation is a computerised tomography (CT) scan, which is highly sensitive and able to detect even small stones.

X-Rays: These are commonly performed as a quick screening test especially in the emergency department, but might miss small kidney stones.

Ultrasound: A simple non-invasive test that can also be performed quickly to evaluate for kidney stones or obstruction in the urinary system.

Urine tests:

Urinalysis: Red blood cells in the urine might be caused by presence of a stone. Urinary nitrites might also suggest presence of infection. The pH of urine might suggest the underlying stone that is present (acidic urine for uric acid stones, alkaline urine for struvite stones).

Urine cultures: Urine is taken and cultured over a period of time to determine presence of bacteria in the urine.

Blood tests:

Metabolic workup: To evaluate if certain salts and minerals are raised within the blood, including calcium, phosphate and uric acid.

Creatinine: To evaluate renal function which can be compromised by presence of a kidney stone.

Urinary Stones (Kidney Stones) - Preparing for surgery

Urinary Stones (Kidney Stones) - Post-surgery care

Urinary Stones (Kidney Stones) - Other Information

Article contributed by Urology, Singapore General Hospital

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

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