Squamous Epithelial Cells in Urine: What the Number on Your Report Means

A routine urinalysis often includes a microscopic examination of urine sediment. Among the cells counted are squamous epithelial cells. Seeing these cells on your lab report can prompt questions: Is this normal? Does a high number mean you have an infection or something more serious? Let’s break it down.

What Are Squamous Epithelial Cells?

• Definition: Squamous epithelial cells are flat, scale-like cells that line the outer layer of skin and certain internal surfaces, including the urethra and around the opening of the urinary tract.
• Function: They form a protective barrier, shielding underlying tissues from friction, pathogens, and chemical irritation.
• Origin in Urine: When you collect a urine sample, a small number of these cells normally slough off and appear in the specimen.

Why They Appear in Urine

1. Normal Shedding

   • Skin and urethral lining constantly renew themselves.
   • A few squamous epithelial cells in a properly collected sample are expected.

2. Sample Contamination

   • If the sample touches skin or genital tissue—especially in women—more squamous cells can wash into the cup.
   • In men, contamination is less common but still possible, especially if the area isn’t cleaned before collection.

3. Catheterization

   • Inserting a catheter can dislodge additional cells along the urinary tract.

Interpreting the Number on Your Report

Labs typically report squamous epithelial cells per high-power field (HPF) under the microscope.

• Normal Range

  • 0–5 cells/HPF is generally considered within normal limits for a clean, midstream catch.
  • Some labs may use 0–2 or 0–3 cells/HPF as their standard, so always check your lab’s reference.

• Low Count (0–5 cells/HPF)

  • Suggests a clean specimen with minimal contamination.
  • Usually no action needed if no other abnormalities are present.

• Moderate to High Count (>5 cells/HPF)

  • Often indicates sample contamination rather than disease.
  • If other markers (like white blood cells, bacteria, or red blood cells) are elevated, it may signal infection or inflammation.

Common Causes of Elevated Squamous Epithelial Cells

• Poor Collection Technique

  • Not cleaning the genital area before providing the sample.
  • Capturing the first stream of urine rather than midstream.

• Genital Skin Cells

  • Skin flakes or discharge can add to the count.

• Catheter-Associated

  • Use of a urinary catheter can scrape cells from the urethra.

• Infection or Inflammation

  • Though less common, internal irritation of the urethra or bladder can increase cell shedding.

When to Be Concerned

Finding more than 5 squamous epithelial cells/HPF on its own rarely indicates a life-threatening condition. However, you should discuss your results with a healthcare professional if:

• You also have elevated white blood cells, nitrites, or bacteria in your urine.
• You experience symptoms such as burning with urination, frequent urges to pee, fever, or lower back pain.
• You’ve had recent urologic procedures or use a catheter.
• You’re not sure if the sample was collected correctly.

Improving Sample Accuracy

To minimize contamination and get a reliable result, follow these steps:

1. Clean Catch Technique

   • Wash genital area with soap and water, or use sterile wipes provided by the lab.
   • Start urinating, let a small amount flow, then collect midstream in the sterile cup.

2. Avoid Touching the Inside of the Cup

   • Hold the cup by its base or lid to keep the interior sterile.

3. Seal and Deliver Promptly

   • Replace the lid tightly and return the sample within the advised time frame (usually within one hour).

Next Steps After High Squamous Epithelial Cell Count

• Repeat the Urinalysis
  • A second, properly collected sample can clarify whether contamination was the issue.
• Urine Culture
  • If infection is suspected, labs may grow bacteria from your sample to identify the cause and antibiotic sensitivities.
• Additional Imaging or Exams
  • In rare cases of persistent abnormalities, your provider may recommend an ultrasound or cystoscopy.

Managing Underlying Issues

If follow-up tests confirm an infection or inflammation:

• Urinary Tract Infection (UTI)
  • Treated with antibiotics. Drinking plenty of water can help flush bacteria.
• Urethritis or Vaginitis
  • May require topical or oral treatments depending on the cause (bacterial, fungal, or other).
• Catheter-Related Concerns
  • Discuss catheter care and possible removal with your healthcare team.

Monitoring Symptoms

Even if your squamous epithelial cell count is slightly elevated due to contamination, it’s smart to stay alert for urinary symptoms. If you notice any of the following, consider getting a free, online symptom check, using the doctor approved Ubie Symptom Checker to help decide if you need further care:

• Pain or burning with urination
• Frequent or urgent need to urinate
• Cloudy, bloody, or strong-smelling urine
• Fever or chills
• Lower back or pelvic pain

Key Takeaways

• A small number of squamous epithelial cells in urine (0–5 cells/HPF) is normal.
• Higher counts often reflect sample contamination rather than disease.
• Proper “clean catch” collection dramatically reduces misleading results.
• If elevated counts coincide with infection markers or symptoms, further evaluation is needed.
• Repeat testing, cultures, and imaging can clarify the cause of abnormalities.

Always review lab results in the context of your overall health and symptoms. Discuss any concerns or abnormal findings with your doctor—especially anything life-threatening or serious. Your healthcare provider can interpret your urinalysis, recommend further tests, and guide you toward appropriate treatment.