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  • The Heart Hospital

    Baylor Plano

    1100 Allied Drive
    Plano, TX 75093
  • The Heart Hospital

    Baylor Denton

    2801 S. Mayhill Road
    Denton, TX 76208
  • Appointments and Referrals

    1.800.4BAYLOR
  • For Assistance in Reaching a Patient

    469.81HEART
    (469.814.3278)
  • Toll-Free
    877.814.4488



Blood Test
 
This is an abbreviated version of the complete article.*
Basic Facts
Blood tests can provide information about many substances found in blood, such as blood cells, hormones, minerals, and proteins.
Drawing blood poses little risk to a person, and test results can be obtained quickly.
Numerous tests can be conducted using a single blood sample.
Blood is the body fluid most commonly analyzed for disease screening and diagnosis. Blood tests can provide information about many substances found in blood, such as hormones, minerals, and proteins. Some of the more common blood tests examine red or white blood cells, proteins, hormones, and enzymes.

Typically, a technician, nurse, or physician draws blood from a vein using a syringe, a process called venipuncture. Venipuncture blood samples are commonly used to:
  • Screen for a disease;
  • Establish a diagnosis;
  • Establish a prognosis;
  • Rule out a clinical problem;
  • Monitor therapy; and
  • Determine an effective drug dosage.
In cardiology, the most frequently ordered blood tests include:
  • Cardiac enzymes, including creatine phosphokinase, myoglobin, and troponin;
  • C-reactive protein;
  • Brain natriuretic peptide;
  • International normalized ratio;
  • Lipid levels; and
  • Oxygen saturation.
PRE-TEST GUIDELINES

A physician may request that the patient avoid certain medications or refrain from eating or drinking prior to the test.

WHAT TO EXPECT

When blood is drawn, a tourniquet is wrapped around the arm. The patient makes a fist and a sterile, disposable needle is inserted into the vein. A syringe or attached vial is used to collect that blood. After the procedure is complete, a piece of gauze is placed over the insertion point and pressure is applied to stop the bleeding.

POST-TREATMENT GUIDELINES

Patients can resume normal activities following the blood test.

POSSIBLE COMPLICATIONS

Some patients may experience temporary bruising at the site of the puncture.

*If you would like to read this article in its entirety, please call our office and ask to meet with one of our specialists to receive a Prescription Pad form.

*If you already have a Prescription Pad form, please login and follow the instructions listed on the form. If you experience any issues during the registration process, please call member services at 1-800-603-1420 for assistance.
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