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Laboratory - Physicians of Katy - Houston


It is responsible for laboratory tests.

A laboratory (lab) test is a mechanism to get information about your body system or the functioning of your organs. Through this procedure, a health care provider takes a sample of your urine, blood, body tissue, or other bodily fluids to know more about your health condition.


Lab tests are important instruments to help detect problems in your body. They show in numbers (reference range) how is your health, and help to diagnose what is happening in your body. 


Among the lab tests that you can get in the Laboratory of Physicians of Katy are:

  • Hematology

  • Chemistry

  • Endocrinology

  • Toxicology

  • Urine Testing

  • Pharmacogenomics (genetics testing)

It is very convenient for patients and health care providers that Physicians of Katy has a laboratory in-house.


It saves time and resources in processing the information, gets results in a faster way, allows a timely diagnosis, and an adequate resolution to your health concern. 

Physicians of Katy - Houston

Purpose of lab tests


To check your overall health. They can help find health problems even before symptoms appear. 


To diagnose a specific illness or condition.


To plan treatments.


To monitor treatment or disease.


The test can show if there have been changes in your health over time.


To screen for disease. A test can show if you are at a higher risk of getting a specific problem or disease. 

Factors that affect

a lab test

  • Sex, age, and gender

  • Medicines

  • Some foods and drinks

  • Stress

  • Variations in lab procedures

  • Having an illness 

  • Energetic exercises

Laboratory - Physicians of Katy - Houston

To understand the results

Laboratory - Physicians of Katy - Houston

  • Negative or normal: results are within normal limits.

  • Positive or abnormal: specific substance was found and/or further testing would be required to confirm a diagnosis. 

  • Uncertain or inconclusive: there was not enough information in the results to diagnose a disease.

Lab tests can not bring the total information required to understand how your body is at a given moment. 

Your health care provider will also need to ask for a physical exam, check your health history, and probably ask for other tests. All these elements together contribute to guiding diagnosis and treatment indications.

As there are many types of lab tests you should ask your health care provider about the preparation for your corresponding test. 

Physicians of Katy - Houston

Opening Hours

462 S. Mason Rd, Suite 100, Katy, TX 77450

Monday-Thursday: 8 am to 5 pm

Friday:       8 am to 4 pm

Saturday:  8 am to12 m

(by appointment only)

Sunday:     Closed

Phone: (281) 693-5289

Fax:       (281) 693-3111

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