What Is a Urine Test?

A urine test examines a urine sample for cells, chemicals, microorganisms, and other substances that may provide information about urinary and general health.

Urine testing may be used to check for:

• Urinary tract infection
• Bladder or kidney infection
• Blood in the urine
• Kidney disease
• Diabetes
• Urinary stones
• Dehydration
• Liver-related abnormalities
• Pregnancy
• Certain sexually transmitted infections
• Medication or drug exposure when specifically requested

A standard urinalysis does not test for every condition. Additional cultures, PCR tests, blood tests, or imaging may be required.

Common Reasons to Get a Urine Test

A doctor may recommend urine testing for:

• Pain or burning during urination
• Frequent or urgent urination
• Blood in the urine
• Cloudy or strong-smelling urine
• Lower-abdominal discomfort
• Back or side pain
• Fever with urinary symptoms
• Urethral discharge
• Suspected STI exposure
• Pregnancy confirmation
• Diabetes monitoring
• Kidney disease screening
• Preoperative evaluation
• Routine health screening

Urinalysis is commonly used to help evaluate UTIs, kidney conditions, and diabetes. MedlinePlus: Urinalysis

Types of Urine Tests in Busan

Routine Urinalysis

A routine urinalysis may include visual, chemical, and microscopic examination.

It can assess:

• Urine color and clarity
• Acidity
• Specific gravity
• Protein
• Glucose
• Ketones
• Blood
• White blood cells
• Nitrites
• Bilirubin
• Cells, crystals, or microorganisms

Abnormal results may require confirmation through additional testing.

Urine Microscopy

Microscopic examination may identify:

• Red blood cells
• White blood cells
• Bacteria
• Yeast
• Crystals
• Epithelial cells
• Cellular casts

The result must be interpreted with symptoms, medical history, and specimen quality.

Urine Culture

A urine culture looks for bacteria or other organisms that may cause an infection. It can also help determine which antibiotics may be effective.

Culture results generally require more time than routine urinalysis because organisms must grow in the laboratory. NIDDK: Diagnosing Bladder Infection

Urine STI Test

A first-catch urine sample may be used for PCR or NAAT testing for infections such as:

• Chlamydia
• Gonorrhea
• Mycoplasma genitalium
• Trichomoniasis in selected settings

A standard urinalysis cannot confirm these STIs. A separate molecular test must be ordered.

Urine Protein Test

Protein testing can help evaluate kidney health. Temporary protein elevation may occur after dehydration, strenuous exercise, stress, or illness, while persistent elevation may require further kidney assessment. MedlinePlus: Protein in Urine

Urine Pregnancy Test

A urine pregnancy test detects human chorionic gonadotropin, commonly called hCG. Testing performed too early may produce a negative result despite pregnancy, so repeat or blood testing may be recommended.

Twenty-Four-Hour Urine Test

A 24-hour collection measures substances released into the urine throughout an entire day. It may be used for:

• Kidney stone evaluation
• Kidney function assessment
• Protein measurement
• Hormone testing
• Metabolic evaluation

All urine produced during the instructed collection period must generally be saved.

Urinalysis vs. Urine Culture

Urinalysis provides preliminary information about inflammation, blood, protein, glucose, and other abnormalities.

A urine culture specifically checks for microorganisms and can help guide antibiotic selection.

A patient may need both tests when:

• UTI symptoms are severe
• Infection recurs
• Previous antibiotics did not work
• Pregnancy is involved
• The patient is male
• Kidney infection is suspected
• Resistant bacteria are a concern
• A urinary procedure was recently performed

Urinalysis vs. Urine STI Testing

A routine urine test and urine STI test are not interchangeable.

Routine urinalysis may show inflammation, but it cannot identify chlamydia, gonorrhea, or Mycoplasma. STI testing uses a different method and often requires a first-catch urine sample rather than a midstream clean-catch sample.

Patients should clearly tell the clinic whether they need:

• UTI testing
• STI screening
• Both UTI and STI testing
• A routine health urinalysis

How to Collect a Clean-Catch Urine Sample

A clean-catch sample reduces contamination from bacteria or cells on the surrounding skin. MedlinePlus: Clean-Catch Urine Sample

Instructions may include:

1. Wash your hands.
2. Clean the urinary opening as instructed.
3. Begin urinating into the toilet.
4. Collect the middle portion of the urine stream.
5. Avoid touching the inside of the container.
6. Finish urinating into the toilet.
7. Close and return the container promptly.

Follow the clinic’s instructions because collection methods vary according to the test.

First-Catch Urine for STI Testing

First-catch urine is generally the beginning portion of the urine stream. The clinic may ask the patient not to urinate for a specified period before collection.

A clean-catch midstream sample may be preferred for bacterial culture, while first-catch urine may be preferred for certain STI tests. Using the wrong collection method may reduce test accuracy.

Preparing for a Urine Test

Before testing, tell the doctor about:

• Current symptoms
• Pregnancy possibility
• Menstrual bleeding
• Recent sexual exposure
• Antibiotic use
• Vitamins and supplements
• Prescription medication
• Recent strenuous exercise
• Previous urinary conditions
• Kidney or prostate history

Certain foods, medications, menstrual blood, dehydration, and vigorous exercise can affect some urine findings.

Do You Need to Fast?

Most routine urine tests do not require fasting. However, fasting may be necessary when urine testing is combined with certain blood tests or health-screening packages.

Patients should follow the clinic’s specific preparation instructions.

Understanding Common Urine Test Results

White Blood Cells

White blood cells may indicate urinary inflammation or infection. They can also appear because of specimen contamination or another urinary condition.

Nitrites

Nitrites may suggest the presence of certain UTI-causing bacteria. A negative nitrite result does not completely exclude infection. MedlinePlus: Nitrites in Urine

Blood

Blood may be associated with:

• Urinary infection
• Kidney or bladder stones
• Prostate conditions
• Kidney disease
• Injury
• Menstrual contamination
• Strenuous exercise
• Urinary tract tumors

Visible or persistent microscopic blood requires medical evaluation.

Protein

Persistent protein may indicate kidney damage or another medical condition. Repeat urine testing and blood-based kidney function tests may be recommended.

Glucose and Ketones

Glucose or ketones may be associated with diabetes, fasting, dietary patterns, dehydration, vomiting, or other metabolic conditions. Blood testing may be needed.

Bacteria

Bacteria can indicate infection, but they may also result from contamination during sample collection. Symptoms, white blood cells, and culture results help clarify the finding.

What Can Cause an Inaccurate Result?

Potential causes include:

• Incorrect collection technique
• Touching the inside of the sample container
• Delayed delivery to the laboratory
• Menstrual contamination
• Recent antibiotic use
• Excessive water intake
• Dehydration
• Strenuous exercise
• Vaginal discharge
• Use of certain medications or supplements

A repeat sample may be recommended when contamination is suspected.

Urine Testing for International Patients

Busan offers urine testing through internal medicine, urology, gynecology, sexual health, and health-screening clinics. English-language support varies by facility.

International patients should bring:

• Passport or identification if required
• A list of medications
• Information about allergies
• Previous urine and blood results
• Names of recently used antibiotics
• Kidney, bladder, or prostate records
• Pregnancy information when applicable
• Dates and sites of possible STI exposure

Patients leaving Korea soon should ask how laboratory results and prescriptions will be delivered.

How Long Do Urine Test Results Take?

Result time depends on the examination:

• Routine urinalysis may be available relatively quickly.
• Urine microscopy may be completed during laboratory processing.
• Urine culture generally takes longer.
• PCR-based STI testing requires separate processing.
• Twenty-four-hour urine testing requires complete collection before analysis.

The clinic should explain whether results will be provided in person, electronically, or through a follow-up appointment.

Urine Test Cost in Busan

The total cost may depend on:

• Medical consultation
• Routine urinalysis
• Urine microscopy
• Urine culture
• Antibiotic susceptibility testing
• STI PCR testing
• Pregnancy testing
• Protein or kidney testing
• Twenty-four-hour urine analysis
• Additional blood tests
• Ultrasound or imaging
• Medical certificates

Patients should request an individualized estimate based on the required test.

When Should You Seek Urgent Medical Care?

Seek prompt medical attention if urinary symptoms occur with:

• High fever or shaking chills
• Severe back, side, or abdominal pain
• Inability to urinate
• Significant blood or clots in the urine
• Persistent vomiting
• Pregnancy with urinary pain or fever
• Severe weakness or confusion
• Reduced urine output
• Rapidly worsening symptoms

These symptoms may indicate kidney infection, urinary obstruction, stones, or another serious condition.

Frequently Asked Questions

Can a urine test diagnose a UTI?

Urinalysis can identify signs of infection, while a urine culture can confirm bacteria and help guide antibiotic treatment.

Can a routine urine test detect an STI?

No. Chlamydia, gonorrhea, and other STIs require separately ordered PCR or NAAT testing.

Can a urine test detect kidney disease?

It may identify protein, blood, or other abnormalities associated with kidney disease, but further urine and blood tests are generally needed.

Can I test while menstruating?

Testing may be possible, but menstrual blood can contaminate the sample. Inform the clinic so it can recommend the best timing or collection method.

Should I stop antibiotics before a urine test?

Do not stop prescribed medication without medical advice. Tell the doctor which antibiotic you are taking because it may affect culture results.

Can international patients get urine testing in Busan?

Yes. International patients can receive routine urinalysis, cultures, STI testing, pregnancy testing, and kidney-related urine tests in Busan.