Squamous Epithelial Cells in Urine: Your Results

A urinalysis checks the look, strength, and contents of urine. It can help assess urinary tract infections, kidney disease, diabetes, bleeding, and other concerns.

This guide explains squamous epithelial cells in urine, what they mean, and how to read your results. It also shows why the full urine report matters.

A small number of certain epithelial cells can be normal in urine¹. A large number may occur with contamination, infection, kidney disease, or another condition^1,2.

One squamous cell result cannot give a diagnosis. The cell type, amount, and other urine findings add needed context.

Epithelial cells cover surfaces inside and outside the body¹. They occur on the skin, blood vessels, organs, and urinary tract¹.

These cells form a barrier on the surfaces they cover^6,10. This barrier helps protect the body from outside threats¹⁰.

The urinary tract includes the kidneys, ureters, bladder, and urethra¹. Each of these parts has surfaces lined by cells¹.

Several types of epithelial cells may appear under a microscope^2,3. They include squamous, transitional, and renal tubular cells¹.

Urine may contain squamous and non-squamous epithelial cells^2,3. That is why the word “epithelial” alone may not give enough detail.

Squamous cells may enter urine from the urethral or vaginal opening⁸. In females, these cells occur in the vagina and urethra⁶.

A small amount may result from normal cell shedding⁸. Healthy urine can contain a small number of epithelial cells^1,6.

Squamous epithelial cells are often linked with sample contamination⁸. Contamination means outside material entered the urine cup during collection.

Improper sample collection is the most common cause listed for epithelial cells in urine⁸. The cells may come from the urethral or vaginal opening⁸.

A high count does not prove that disease is present. It also does not explain the result without more information.

A laboratory can view urine under a microscope and count epithelial cells¹. This process is called microscopic urine analysis¹.

Squamous cells are large cells with many sides⁸. They have small, round centers called nuclei⁸.

Laboratory staff use these features to tell cells apart. The report may name the cell type and give an amount.

Urine microscopy may show other materials as well. These can include blood cells, bacteria, casts, and crystals.

A urinalysis is a basic first test for many health issues. An unusual result may need more testing to find its cause.

A report may count squamous cells per high-power field¹⁰. “High-power field” means one area viewed at high strength under a microscope.

The report may shorten this term to “HPF.” A result might also use words rather than a number.

Common report labels include “few,” “moderate,” or “many.” Read these labels beside the range shown by the testing laboratory.

StatPearls does not specify a normal squamous-cell count^2,3, but another source lists 15 to 20 per high-power field or less as typical⁶. Another source describes zero to five cells per field as a typical range⁸.

These published ranges are not the same^2,3,8. Use the range printed on your own laboratory report.

A small number of certain epithelial cells is normal in urine¹. Normal shedding may explain a small amount⁸.

A large number may occur with contamination or a urinary tract infection^1,2. It may also occur with kidney disease or another condition¹.

Squamous cells are commonly tied to contamination⁸. Still, the count alone cannot show why the cells appeared.

A label such as “many” needs context. Compare it with the laboratory range and the other findings.

The reason for the test also matters. A urine test may be used for routine screening or to check a health concern.

Do not use one abnormal line as a diagnosis. Unusual urine results often need more tests to find the source.

Published sources describe squamous epithelial cells in different ways^2,3,8. StatPearls lists 15 to 30 mL of urine as sufficient for accurate analysis^2,3.

Another patient source lists zero to five cells per field as typical⁸. This difference shows why the laboratory’s own range matters.

Check the value and reference range side by side. Also note whether the report uses a number or a word label.

Urine test results are not always reliable. Laboratory testing or more review may help when a result is abnormal.

These questions can help you read the report:

Contamination is commonly linked with squamous epithelial cells⁸. These cells may enter from the urethral or vaginal opening⁸.

Improper collection is the most common listed cause of epithelial cells in a urine sample⁸. A clinician may ask for another urine test when this occurs⁸.

Several outside materials can appear in urine samples. Examples include vaginal creams, vaginal fluids, and semen^2,3.

Mucus, yeast, fecal material, and talcum powder may also be present^2,3. StatPearls lists these materials alongside cells, bacteria, and crystals as factors associated with urine appearance^2,3.

A high squamous cell count may raise concern about sample quality. It cannot show by itself whether the sample was contaminated.

Research cited in the dossier reports that squamous cells do not accurately predict culture contamination. Therefore, the count should not be used as the only test of sample quality.

A high epithelial cell count may occur with a urinary tract infection^1,7. A urinary tract infection is often called a UTI.

A UTI can affect the kidneys, ureters, bladder, or urethra⁷. Infection can cause swelling and irritation in the urinary tract⁷.

That irritation can make cells in the urinary lining shed into urine⁷. However, squamous cells alone cannot confirm an infection.

Contamination can also produce squamous epithelial cells in a sample^1,2. The same finding can therefore have more than one cause.

Urinalysis is used to assess UTIs, including cystitis. Cystitis is a health problem that affects the bladder.

Urine appearance may provide more context. For example, a UTI can make urine look cloudy.

Cloudy urine does not identify the cause by itself. Unusual findings may require more testing.

Not all epithelial cells in urine are squamous. Transitional and renal tubular cells have different origins from squamous cells^2,3,6.

Transitional cells occur between the urethra and renal pelvis in males⁶. The renal pelvis is part of the kidney’s urine-collecting area.

Transitional cells are a type of epithelial cell; a small number of epithelial cells in urine can be normal, while a larger number may signal a UTI^2,3,10. Squamous cells may be linked with sample contamination^2,3,8.

Renal tubular cells come from the kidneys⁶. They should not be treated as routine squamous contamination.

An increased number of renal tubular cells may signal a kidney disorder, while acute tubular necrosis and pyelonephritis are listed with low urine osmolality^3,10. Acute tubular necrosis is damage to cells in the kidney tubules.

Pyelonephritis is a kidney infection. StatPearls lists several conditions associated with low urine pH.

Renal tubular cells may also fail to reabsorb filtered proteins, producing a tubular pattern of proteinuria³. Other listed factors include foods and drugs that may alter urine color, odor, or pH³.

These links do not give a diagnosis by themselves. Ask which type of epithelial cell the laboratory found.

Squamous epithelial cells are a laboratory finding. The count cannot name a health condition by itself.

A large number may occur with contamination, a UTI, or kidney disease^1,2. Other serious health conditions may also cause a large number¹.

Urinalysis can help assess infections and bleeding in the urinary tract. It can also help check kidney disease, liver disease, diabetes, and urinary stones.

The test checks the urine’s look, strength, and contents. These parts need to be read together.

A UTI can make urine appear cloudy. However, cloudy urine alone does not explain the cause.

Higher urine protein can be a sign of kidney disease. One protein result still needs to be read with the full report.

The dossier does not provide an urgency scale for the UTI symptoms it lists. For that reason, this guide does not assign urgency to particular symptoms.

If symptoms led to the test, discuss them with a healthcare professional. The test result and reason for testing should be reviewed together.

A clinician may request another urine test after improper collection⁸. A new sample can help clarify an unclear first result.

Follow the exact collection steps given by the clinic or laboratory. Ask a staff member for help if any step is unclear.

Try to keep outside material away from the urine cup. Vaginal creams, vaginal fluids, and semen can affect a sample^2,3.

Mucus, yeast, fecal material, and talcum powder can also appear in urine^2,3. These materials are listed among factors associated with urine appearance^2,3.

The source dossier does not give full clean-catch steps. Use the written directions supplied with your collection cup.

Careful collection does not make a result perfect. Squamous cell counts do not accurately predict urine culture contamination.

Improper collection may lead a clinician to request another urine test⁸. This may clarify whether outside cells entered the first sample.

Unusual urinalysis results often require more testing. Further tests can help find the source of an abnormal result.

Ask whether the report names the cell type. Squamous cells may indicate contamination, while an increased number of renal tubular cells may suggest a kidney problem; transitional cells have a different origin^2,3,10.

A repeat result may still need review. A urinalysis is only an initial test for many health concerns.

More evaluation may depend on the whole report. It may also depend on why the urine test was ordered.

The squamous epithelial cell count does not identify one cause. It should not direct treatment by itself.

A small number of certain epithelial cells may be normal¹. A large number may occur with contamination, infection, or kidney disease^1,2.

These possible causes do not have the same meaning. More information is needed before the result can be explained.

A clinician may review the full urinalysis. Unusual findings often need more testing to identify their source.

The report may also name the epithelial cell type. That detail matters because an elevated number of squamous cells may suggest contamination, while the other cell types have different origins^2,3,6.

Discuss an unexplained abnormal urine result with a healthcare professional. Unusual results may need more tests to find their source.

Urine results are not always reliable. Abnormal results may need laboratory review or more assessment.

Do not assume that many squamous cells prove a UTI. High levels can occur with contamination, infection, kidney disease, or another condition^1,2.

The dossier does not support a list of emergency warning signs for this finding. It also does not set a time limit for seeking care.

These questions may help during a medical visit:

Ask for more detail if the report lists renal tubular cells. An increased number of these cells may suggest a kidney disorder, rather than a specific kidney infection^3,10.

They may also be among the non-squamous epithelial cells found in urine. Other listed considerations include examining urine promptly because cells can change³.

A high squamous count should always be read in context. Squamous cells are commonly associated with contamination⁸.

Still, the cell count does not accurately predict culture contamination. It also cannot confirm a UTI on its own.

Understanding squamous epithelial cells in urine takes more than checking a “high” label. A small number of certain epithelial cells can be normal¹.

A large number may reflect contamination or a UTI^1,2. Kidney disease or another condition may also be linked with a large number¹.

Squamous cells are commonly associated with contamination⁸. Cells from the urethral or vaginal opening may enter the sample⁸.

Normal shedding may explain a small amount⁸. Improper collection is the most common listed cause of epithelial cells in a sample⁸.

Published sources discuss epithelial cells and laboratory-dependent urine reference values^2,3,8. StatPearls does not specify a normal squamous-cell count^2,3, but another source lists 15 to 20 per high-power field or less as typical⁶.

Another source lists zero to five cells per field as typical⁸. Compare your result with the range on your own report.

Check whether the cells were squamous, transitional, or renal tubular. These cells have different origins and possible meanings^2,3,6.

Renal tubular cells should not be viewed as ordinary squamous contamination. Urine osmolality has listed links with acute tubular necrosis, impaired kidney function, and pyelonephritis³.

An unusual result may lead to another sample or more testing^8,9. The full report and reason for testing give useful context.

Squamous epithelial cells in urine often reflect normal shedding or contamination^2,3,8. Review an unclear result with a healthcare professional rather than reading the count alone.