Differential Diagnosis for Urinalysis Results
Single Most Likely Diagnosis
- Urinary Tract Infection (UTI): The presence of moderate bacteria in the urinalysis is a strong indicator of a UTI. The small amount of bilirubin and protein (30) can also be seen in UTIs, especially if there is an associated inflammation or infection of the kidneys (pyelonephritis).
Other Likely Diagnoses
- Kidney Stone: Kidney stones can cause an infection (leading to bacteria in the urine) and may also result in the presence of bilirubin and protein due to obstruction and renal damage.
- Chronic Kidney Disease: This condition can lead to proteinuria (protein in the urine) and may also have associated infections or other abnormalities that could explain the bilirubin and bacteria.
- Nephrotic Syndrome: Although less likely given the moderate amount of bacteria, nephrotic syndrome can cause significant proteinuria and may have associated infections or other complications.
Do Not Miss Diagnoses
- Sepsis: While less common, if the UTI or kidney infection has progressed to sepsis, it would be critical to identify and treat promptly. Sepsis can present with a wide range of symptoms and lab findings, including abnormalities in urinalysis.
- Obstructive Uropathy: This condition, where there is a blockage in the urinary tract, can lead to infection and kidney damage. It's crucial to diagnose and relieve the obstruction to prevent long-term kidney damage.
- Pyelonephritis: An infection of the kidney, which can be severe and requires prompt treatment. The presence of bacteria and other abnormalities in the urinalysis could indicate pyelonephritis.
Rare Diagnoses
- Tubulointerstitial Nephritis: An inflammation of the tubules and interstitial tissue of the kidneys, which can be caused by infections, drugs, or other diseases. It might present with similar urinalysis findings but is less common.
- Glomerulonephritis: An inflammation of the glomeruli, the filtering units of the kidneys. While it primarily presents with hematuria (blood in the urine) and proteinuria, some forms could potentially have associated infections or other findings that might fit the given urinalysis results.