Tests

Blood Tests

 

Basic Facts

  • Blood tests yield information about many different substances found in blood, such as 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 tests can yield information about many different substances found in blood, such as hormones, minerals, and proteins. Typically, blood is drawn from a vein using a syringe, a process called venipuncture.

In urology, the most frequently ordered blood tests include:

  • Blood urea nitrogen (BUN);
  • Creatinine;
  • Prostate specific antigen (PSA);
  • B-human chorionic gonadotropin (B-hCG);
  • Alpha fetoprotein (AFP);
  • Uric acid;
  • Phosphate; and
  • Calcium.

PRE-TEST GUIDELINES

A physician may request the patient avoid certain medications 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

The patient may experience temporary bruising at the site of needle insertion.

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