Epithelial cells in urine: squamous, transitional, renal — normal in women and men

In shortEpithelial cells in urine are shed lining cells of the urinary tract. Normal: squamous — single cells (in women up to 5–10 per field), transitional — 0–1, renal absent in normal urine. A lot of epithelium means inflammation or discharge contamination during collection.

What this marker is

The lining of the urinary tract constantly renews itself, and shed cells enter urine. The cell type hints at the origin: squamous epithelium — from the urethra (in women also the vagina), transitional — from bladder and ureters, renal — from kidney tubules.

So a lot of squamous epithelium usually means a collection error or urethral inflammation, a rise in transitional epithelium means cystitis, and renal epithelium means kidney damage. The result is always read together with leukocytes and mucus.

Reference ranges

Group	Reference range
Squamous epithelium	single cells per field; in women — up to 5–10
Transitional epithelium	0–1 per field of view
Renal epithelium	normally absent
A lot of epithelium with leukocytes	inflammation of the corresponding urinary tract section

In women, squamous epithelium enters urine from the vagina — up to 5–10 cells per field with proper collection is not pathology. Renal epithelium is always a reason to see a doctor. Ranges differ between laboratories.

Check your value

Enter the number from your lab report — see how it compares with the typical range. Mind the units shown in the chosen row.

An approximate comparison with a typical range, not a diagnosis. Ranges differ between laboratories — use the one on your report; a doctor interprets the result.

When it is high or appears: possible causes

Poor collectionContamination with skin and vaginal cells — the most common cause.

UrethritisA lot of squamous epithelium with leukocytes and burning.

CystitisA rise in transitional epithelium — the bladder lining is inflamed.

Pyelonephritis and nephrosisRenal epithelium — tubular damage in the kidney.

Vaginitis and colpitis in womenDischarge enters urine — epithelium, mucus, leukocytes.

What can skew the result

These factors can shift the result without any disease — keep them in mind before a retest:

Collection without genital hygieneVaginal dischargeLong urine storageRecent catheterization

How to prepare

Genital hygiene and a midstream sample are the only way to tell urinary-tract epithelium from skin or vaginal contamination. Women skip the test during menstruation.

When a retest makes sense

A lot of squamous epithelium means a retest with careful preparation. Renal epithelium is not retested “just in case” — it goes straight to the doctor.

Who usually reviews this result

An out-of-range result is usually reviewed by: Primary care physician, urologist; women may also see a gynecologist. Bring your report and any previous results to the visit.

Names used on lab reports

Look for one of these names on your report:
Epithelial cells in urineSquamous epitheliumTransitional epitheliumEpithelial cells

Several markers on your report?

The app reads your whole report — this marker together with its neighbors, not one by one.

Get your results explained See an example

Frequently asked questions

8–10 epithelial cells in a woman’s urine — normal?

For squamous epithelium in women it is the upper limit of normal if the sample was collected correctly. If much epithelium comes with leukocytes and mucus, retest with genital hygiene — discharge contamination is possible.

What does “renal epithelium” mean on the report?

Normally there is none. The finding means tubular damage in the kidney — a nephrology consult with blood tests and ultrasound is needed.

Epithelium in a child’s urine — what does it say?

Most often that a clean midstream sample was not achieved. Retest after thorough washing; a persistent rise with leukocytes is a reason to see the pediatrician.

Sources

MedlinePlus — Urinalysis — MedlinePlus (medlineplus.gov). Accessed: September 17, 2026.
MSD Manuals — Urinalysis — MSD Manuals (msdmanuals.com). Accessed: September 17, 2026.

Epithelial cells in urine