What Is Urinalysis?

Urinalysis is the examination of a urine specimen to obtain information about its physical, chemical and, when required, microscopic characteristics.

It is one of the most widely used laboratory screening procedures because urine can provide useful information about several physiological and biochemical processes without requiring a blood sample.

Depending on the purpose of testing, urinalysis may include:

• Visual examination of the specimen
• Chemical testing using urine reagent strips
• Microscopic examination
• Additional laboratory investigations when clinically indicated

This guide focuses mainly on urine chemistry testing using reagent strips, including glucose, protein, ketones, leukocytes, nitrite, blood, pH, specific gravity, bilirubin and urobilinogen.

To browse urine reagent strips, analyzers and sample-collection accessories, visit the Microsidd Urine Chemistry Collection.

What Are Urine Test Strips?

Urine test strips, also called urinalysis reagent strips, urine reagent strips or urine chemistry strips, contain chemically treated reagent areas that react with selected substances or characteristics in a urine specimen.

After the strip is exposed to urine, the reagent pads may change colour. The resulting colours are compared with the reference chart supplied with the product or read using a compatible urine chemistry analyzer.

Different urine strips test different numbers and combinations of parameters.

Examples include:

• 1-parameter strips – such as urine glucose strips
• 2-parameter strips – such as glucose + protein or glucose + ketone
• 10-parameter strips – broader routine urine chemistry screening
• Specialized multi-parameter strips for compatible professional analyzers

What Can a Urine Test Strip Measure?

A commonly used 10-parameter urinalysis strip may include:

Parameter	Abbreviation	What It Screens
Leukocytes	LEU	Leukocyte activity in urine
Nitrite	NIT	Nitrite produced by certain nitrate-reducing bacteria
Urobilinogen	URO	Urobilinogen present in urine
Protein	PRO	Protein present in urine
pH	pH	Relative acidity or alkalinity of urine
Blood	BLO	Blood-related reactions in the specimen
Specific Gravity	SG	Relative concentration of urine
Ketones	KET	Ketone bodies detected by the reagent system
Bilirubin	BIL	Bilirubin present in urine
Glucose	GLU	Glucose present in urine

Not every urine strip includes all of these parameters. Always verify the exact strip configuration before testing or ordering.

1. Glucose in Urine – GLU

The glucose reagent area screens for glucose present in the urine specimen.

Normally, the kidneys reabsorb most filtered glucose. Glucose may appear in urine when blood glucose rises above the kidney's ability to reabsorb it, although other causes are possible.

Urine glucose testing provides different information from direct blood glucose measurement.

Urine glucose testing does not independently diagnose diabetes and should not replace blood glucose testing or HbA1c where these are clinically required.

Urine Glucose Testing Options

For focused urine glucose screening, Microsidd carries products such as:

• Mission 1G Urine Glucose Test Strips
• Microsidd Glucose + Protein Urine Test Strips
• Microsidd Glucose + Ketone Urine Test Strips

2. Protein in Urine – PRO

The protein reagent area screens for protein present in the urine specimen.

Urine reagent strips are generally more sensitive to albumin than to some other proteins.

Protein may appear temporarily or persistently for several reasons. A single positive urine protein result should not automatically be interpreted as kidney disease.

Repeated or unexpected findings may require further clinical and laboratory assessment.

Glucose + Protein Urine Strips

If glucose and protein are the specific parameters required, focused two-parameter strips may be more appropriate than a broad 10-parameter strip.

View Microsidd Glucose + Protein Urine Test Strips →

View Mission 2GP Glucose + Protein Strips →

3. Ketones in Urine – KET

Ketones are produced when the body uses fat as an important source of energy.

Urinary ketones may occur in situations including:

• Fasting
• Reduced carbohydrate intake
• Prolonged exercise
• Vomiting
• Illness
• Inadequate insulin availability

The significance of a urine ketone result depends on the person's overall clinical situation.

In people with diabetes, significant ketones—especially together with high blood glucose or concerning symptoms—can require prompt medical assessment.

Glucose + Ketone Urine Strips

View Microsidd Glucose + Ketone Urine Test Strips →

View Mission 2GK Glucose + Ketone Strips →

4. Leukocytes in Urine – LEU

The leukocyte reagent area screens for activity associated with white blood cells in the urine specimen.

Leukocytes may be present during urinary tract inflammation or infection, but a positive leukocyte result does not independently establish the cause.

The finding should be considered together with symptoms, specimen quality and other urinalysis findings.

5. Nitrite in Urine – NIT

The nitrite reagent area screens for nitrite that may be produced when certain bacteria convert nitrate to nitrite.

A positive nitrite result can contribute useful information during urinary tract screening.

However, a negative nitrite result does not rule out urinary tract infection because not all organisms produce nitrite and several specimen-related factors can affect the result.

Leukocytes + Nitrite and UTI Screening

Leukocyte and nitrite findings are often considered together because both may contribute to urinary tract screening.

Neither parameter alone, nor a urine reagent strip by itself, definitively diagnoses a urinary tract infection.

Where clinically indicated, urine microscopy, culture or other investigations may be required.

6. Blood in Urine – BLO

The blood reagent area screens for blood-related reactions in the urine specimen.

An unexpected positive finding can have several possible causes and should not automatically be interpreted as a specific diagnosis.

Persistent or clinically significant results may require further investigation.

7. Urine pH

Urine pH provides an indication of whether the urine specimen is relatively acidic or alkaline.

Urine pH can vary with diet, metabolism, medications, specimen storage and several physiological or clinical conditions.

A pH result should therefore be interpreted within the broader urinalysis context.

8. Specific Gravity – SG

Urine specific gravity provides an indication of the relative concentration of the specimen.

It can contribute information about urine concentration and hydration status but should not be treated as a standalone measure of kidney function.

9. Bilirubin in Urine – BIL

The bilirubin reagent area screens for bilirubin in urine.

Unexpected bilirubin findings may require further assessment, but a reagent-strip result should not independently be interpreted as a diagnosis of liver or biliary disease.

10. Urobilinogen in Urine – URO

Urobilinogen is formed during bilirubin metabolism and may be present in urine within expected ranges.

Abnormal findings should be interpreted together with other laboratory results and clinical information rather than as a standalone diagnosis.

Focused Urine Testing vs 10-Parameter Urinalysis

More parameters are not automatically better for every testing situation.

The correct strip depends on the parameters actually required.

Testing Requirement	Suggested Strip Type
Glucose only	1-parameter glucose strip
Glucose + Protein	2-parameter GLU + PRO strip
Glucose + Ketones	2-parameter GLU + KET strip
Broader urine chemistry screening	10-parameter urinalysis strip

Microsidd Urine Test Strip Range

Microsidd's own urine chemistry range includes focused two-parameter products and broader 10-parameter urinalysis strips.

Product	Parameters	Best Suited For
Microsidd Glucose + Protein	GLU + PRO	Focused glucose and protein screening
Microsidd Glucose + Ketone	GLU + KET	Focused glucose and ketone screening
Microsidd URS10T	10 parameters	Broader routine urine chemistry screening

For a more detailed comparison, read:

Urine Test Strips Comparison: Glucose + Protein vs Glucose + Ketone vs 10 Parameter →

Mission Urine Reagent Strip Options

Microsidd also supplies Mission urinalysis reagent strips for different urine chemistry requirements.

Mission Strip	Parameters
Mission 1G	Glucose
Mission 2GP	Glucose + Protein
Mission 2GK	Glucose + Ketones
Mission 10U	10-parameter urinalysis

How to Use Urine Test Strips

Exact procedures vary by manufacturer and strip configuration, so the Instructions for Use supplied with the specific product must always take priority.

A typical visual urine reagent-strip procedure may involve:

1. Collect a fresh urine specimen in a clean, suitable container.
2. Remove one reagent strip without touching the test areas.
3. Immediately close the strip container.
4. Immerse all required reagent areas into the specimen according to the product instructions.
5. Remove the strip after the specified immersion time.
6. Remove excess urine as directed.
7. Keep the strip appropriately positioned while the reagent reactions develop.
8. Compare each reagent area with its corresponding colour scale at the specified reading time.
9. Record results where required.
10. Dispose of the used strip appropriately.

Why Reading Time Matters

One of the most common mistakes in visual urinalysis is reading every reagent pad at the same arbitrary time.

Different parameters may require different development periods.

Reading a reagent pad:

• Too early may produce an incomplete colour reaction.
• Too late may produce a colour that no longer corresponds accurately to the manufacturer's interpretation chart.

Always follow the parameter-specific timing stated in the product instructions.

How to Read a Urine Test Strip Colour Chart

For visual testing, compare each reagent pad only with the corresponding parameter row on the colour chart supplied with that product.

For better consistency:

• Use good neutral lighting.
• Do not read under strongly coloured lighting.
• Compare the strip at the correct time.
• Do not touch or smear reagent areas.
• Use the chart supplied for the exact strip product.
• Do not substitute a chart from another brand or strip configuration.

Common Urine Test Strip Errors

Several pre-analytical and testing errors can affect urine reagent-strip results.

Using an Old Specimen

Urine chemistry can change after collection. Fresh specimens are generally preferred unless the test protocol provides specific storage instructions.

Using the Wrong Container

Residues, detergents, contamination or inappropriate specimen containers may interfere with testing.

Leaving the Strip Container Open

Moisture and environmental exposure may damage reagent pads.

Touching the Reagent Pads

Finger contact can contaminate or alter chemically treated test areas.

Incorrect Immersion

Over-immersion, insufficient wetting or failure to remove excess urine can affect reagent reactions.

Incorrect Timing

Reading too early or too late is a common cause of inaccurate visual interpretation.

Using Expired Strips

Do not use reagent strips beyond the expiry date stated by the manufacturer.

Urine Sample Collection for Reagent Strip Testing

Reliable urine chemistry testing starts with appropriate specimen collection.

A clean, suitable urine specimen container helps reduce external contamination and provides a practical vessel for reagent-strip testing.

View Urine Specimen Container →

A general workflow is:

1. Collect the sample according to the laboratory or healthcare professional's instructions.
2. Avoid touching the inside of the specimen container or lid.
3. Close the container securely.
4. Label professional laboratory samples appropriately.
5. Test or transport the specimen within the required time and storage conditions.

Specialized tests such as urine culture, timed urine collection or other laboratory investigations may have different collection requirements.

Visual Urine Strip Reading vs Urine Analyzer

Urine reagent strips may be read visually or, for compatible strip systems, using a urine chemistry analyzer.

Visual Reading	Analyzer Reading
Colour comparison performed by operator	Optical system measures reagent-pad reflectance
Suitable for lower-volume workflows	Useful for repeated professional testing
Results generally recorded manually	Results may be stored, printed or transferred
Operator and lighting can influence colour comparison	Improves standardization of compatible strip reading
No analyzer required	Requires compatible reagent strips and analyzer

Mission U120 Urine Analyzer

The Mission U120 Urine Analyzer is designed for professional urine chemistry workflows and offers throughput of up to 120 tests per hour, Routine/STAT/QC modes, result storage and thermal printing.

It is suitable for laboratories that want more standardized strip interpretation and data handling than manual visual reading alone. :chatgpt-content-reference{index="0"}

Mission U500 Urine Analyzer

The Mission U500 Urine Analyzer is designed for higher-volume professional workflows and offers throughput of up to 500 tests per hour, touchscreen operation, barcode support, result storage and workflow-control functions. :chatgpt-content-reference{index="1"}

Exact reagent-strip compatibility should always be confirmed before purchasing strips for analyzer use.

When Should a Laboratory Consider a Urine Analyzer?

An analyzer may be useful when:

• Many urine specimens are tested each day.
• Multiple staff members perform urinalysis.
• More standardized reagent-pad interpretation is desired.
• Results need to be stored or printed.
• Barcode or patient identification workflows are required.
• QC documentation is important.
• LIS or computer connectivity is needed.

Urine Analyzer Accessories

Professional urine analyzer workflows may also require accessories such as compatible thermal printer rolls.

View Urine Chemistry Analyzer Printer Rolls →

How to Choose the Right Urine Test Strip

Before ordering, ask five questions:

1. Which parameters are actually required?
2. Will the strip be read visually or with an analyzer?
3. What testing volume is expected?
4. Is the exact strip compatible with the analyzer being used?
5. Can the pack be used within its expiry and opened-container stability period?

Choose a Focused Strip When

• Only one or two parameters are required.
• A broader urinalysis panel would provide unnecessary information.
• The testing workflow is specifically focused on glucose, protein or ketones.

Choose a 10-Parameter Strip When

• Broader routine urine chemistry screening is required.
• Several parameters need to be evaluated from the same specimen.
• Parameters such as leukocytes, nitrite, blood, pH or specific gravity are also needed.

Consider an Analyzer When

• Testing volume is moderate or high.
• Standardized interpretation is important.
• Result storage, printing or connectivity is required.

How to Store Urine Test Strips

Urine reagent pads are chemically reactive and can be affected by moisture, heat and improper handling.

General good practice includes:

• Keep strips in their original container.
• Close the container immediately after removing a strip.
• Protect from excessive heat and humidity.
• Protect from direct sunlight.
• Do not touch reagent pads.
• Do not transfer strips between containers.
• Follow the manufacturer's specified storage temperature.
• Observe opened-container stability where applicable.
• Do not use strips after their stated expiry date.

Does an Abnormal Urine Strip Result Mean Disease?

No.

A urine reagent strip is primarily a screening and monitoring tool. An abnormal reagent-pad result can have several possible explanations.

Interpretation may depend on:

• Symptoms
• Medical history
• Medication
• Diet
• Hydration
• Timing of sample collection
• Specimen quality
• Other laboratory findings

Unexpected or persistent abnormalities may require repeat testing or additional laboratory and clinical investigations.

Urinalysis for Laboratories, Clinics and Healthcare Facilities

Urine chemistry testing is used across a wide range of professional healthcare environments, including:

• Diagnostic laboratories
• Hospitals
• Clinics
• Point-of-care testing centres
• Health screening programmes
• Occupational health settings
• Medical camps

Microsidd India supplies urine reagent strips, urinalysis products, analyzers and related laboratory accessories from Bengaluru, Karnataka to healthcare professionals, laboratories and customers across India.

Explore the Microsidd Urine Chemistry Collection →

Shop Urine Chemistry Products by Requirement

Requirement	Suggested Product
Urine glucose only	Mission 1G
Glucose + Protein	Microsidd Glucose + Protein
Glucose + Ketones	Microsidd Glucose + Ketone
10-Parameter Urinalysis	Microsidd URS10T
Lower / Moderate Analyzer Workload	Mission U120
Higher-Volume Analyzer Workflow	Mission U500
Sample Collection	Urine Specimen Container

Frequently Asked Questions About Urinalysis and Urine Test Strips

What is a urine test strip?

A urine test strip is a reagent strip containing chemically treated test areas designed to screen selected substances or characteristics in a urine specimen.

What does a 10-parameter urine test strip test?

A common 10-parameter configuration includes leukocytes, nitrite, urobilinogen, protein, pH, blood, specific gravity, ketones, bilirubin and glucose.

Can urine test strips diagnose a disease?

No. Urine reagent strips provide screening information. Abnormal findings may require clinical interpretation and additional laboratory testing.

Can urine glucose strips diagnose diabetes?

No. Urine glucose testing alone does not diagnose diabetes and does not replace clinically appropriate blood glucose or HbA1c testing.

Do leukocytes and nitrite confirm a UTI?

No. These parameters can support urinary tract screening, but they do not independently confirm infection.

Does protein in urine always mean kidney disease?

No. Protein may occur for several temporary or persistent reasons. Repeated or unexpected findings should be evaluated appropriately.

What do ketones in urine mean?

Ketones may appear when the body uses fat as an important energy source. This can occur during fasting, low-carbohydrate intake, illness, vomiting, prolonged exercise or inadequate insulin availability.

Can I read urine strips without an analyzer?

Many reagent strips are designed for visual interpretation using a product-specific colour chart. Always check the instructions for the exact strip being used.

Can every urine strip be used with a urine analyzer?

No. Analyzer compatibility is specific to the analyzer, reagent-strip model and configuration. Never assume compatibility based only on brand.

Why is urine strip timing important?

Reagent reactions develop over time. Reading too early or too late may produce an incorrect interpretation.

Can I reuse a urine test strip?

No. Urine reagent strips are intended for single use.

What container should I use for urine testing?

Use a clean, suitable specimen container appropriate for the intended laboratory test.

View Urine Specimen Container →

What is the difference between urine chemistry and complete urinalysis?

Urine chemistry refers mainly to chemical reagent-strip testing. A complete clinical urinalysis may additionally include physical examination, microscopy and other investigations when required.

Which urine test strip should I buy?

Choose according to the required parameters. A focused 1- or 2-parameter strip may be appropriate when only selected markers are required, while a 10-parameter strip is more suitable for broader routine urine chemistry screening.

For a detailed product comparison, read:

Urine Test Strips Comparison: Glucose + Protein vs Glucose + Ketone vs 10 Parameter →

Explore Urine Chemistry at Microsidd

Microsidd's Urine Chemistry collection brings together focused urine reagent strips, 10-parameter urinalysis strips, professional urine analyzers, sample-collection products and analyzer accessories.

Shop Urine Test Strips, Urinalysis Products & Urine Analyzers →

Medical Information Notice

This article is provided for general educational and product-selection information and is not a substitute for medical advice, diagnosis or treatment.

Urine reagent strips are screening and monitoring aids. Their results can be influenced by specimen collection, storage, timing, medication, diet, hydration and other physiological or clinical factors.

Unexpected, persistent or clinically significant abnormalities should be interpreted by an appropriately qualified healthcare professional and confirmed with additional laboratory or clinical investigations where necessary.

Do not start, stop or modify medication, insulin, diet or other medical treatment solely on the basis of a urine reagent-strip result.

Always follow the Instructions for Use supplied with the specific product being used.