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What do you think about proteinurea
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"Proteinuria"[MeSH Terms] AND "Urinary Tract Infections"[MeSH Terms]
This urine report shows trace proteinuria that is most likely not a primary kidney problem. It is probably a by-product of the infection or inflammation, or blood, shown elsewhere on the report. I read the values straight from your photo, so check them against the original.
What the report shows (56-year-old woman, urine routine):
| Parameter | Result | Comment |
|---|---|---|
| Color / transparency | Yellowish, slightly turbid | Fits cells or pus in the urine |
| pH / specific gravity | 6.0 / 1.015 | Normal |
| Protein | Present, 15 mg/dL | Trace on dipstick |
| Glucose, bilirubin, ketones, urobilinogen | Absent | Normal |
| Blood (dipstick) | Present | Abnormal |
| Nitrite | Absent | Does not rule out infection |
| Leucocyte esterase | Present | Abnormal |
| Pus cells | 10-12/hpf (ref 0-5) | Pyuria |
| Epithelial cells | 3-5/hpf (ref <10) | Acceptable, so contamination is less likely |
| RBC | 8-10/hpf | Microscopic hematuria |
How I read the proteinuria:
- 15 mg/dL is trace-level on a dipstick, which is a screening test. A dipstick detects mainly albumin. It can give false positives with alkaline or dilute urine, blood, or inflammatory cells such as in a urinary tract infection. This is what Rosen's Emergency Medicine says in its section on dipstick proteinuria. Harrison's Principles of Internal Medicine 22E says the same in its proteinuria section.
- This sample also has pus cells, RBCs and positive leucocyte esterase. Together these point to a urinary tract infection or another inflammatory cause. A negative nitrite doesn't exclude infection, since not all organisms convert nitrate to nitrite.
- Heavy glomerular proteinuria would usually look different: 2+ or more on dipstick, often with casts and little pyuria. A single trace result alongside pyuria and hematuria is not enough to call it kidney disease.
- Persistent proteinuria is only meaningful if it remains after the acute problem is treated. Brenner and Rector's The Kidney (Reagent Strip Testing section) describes dipsticks as a semiquantitative screening tool. Confirmation and quantification need a urine protein-to-creatinine ratio (UPCR) or albumin-to-creatinine ratio (ACR).
The RBCs plus pus cells are the more important finding. The handwritten notes on the chart look like they mention a stone ("? stone", "endo..."). I can't read them reliably. If a stone is being considered, that fits: stones commonly cause hematuria, pyuria and trace protein.
Usual next steps:
- Send a urine culture and sensitivity, ideally before antibiotics.
- Treat the infection if the symptoms and culture support it, and consider imaging (ultrasound or CT KUB) for stones or obstruction.
- Check serum creatinine and eGFR.
- Repeat the urine routine after treatment. If protein persists, get a spot UPCR or ACR on a clean sample.
- Persistent hematuria after the infection clears should be worked up further. At 56, that may include imaging and cystoscopy.
I can't diagnose from this alone, and the other pages (the report is "page 1 of 3") and the clinical picture matter. If you share the creatinine, culture or imaging, I can help interpret those too.
A quick PubMed check for recent meta-analyses on proteinuria and urinary tract infection found nothing that changes this approach. The results were on unrelated topics: IgA nephropathy, stroke and hepatitis C.
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