Health Encyclopedia

 

Tests & Procedures



Vascular Endothelial Growth Factor

Vascular Endothelial Growth Factor

Does this test have other names?

VEGF, vascular permeability factor, VPF 

What is this test?

This test measures the amount of vascular endothelial growth factor (VEGF) in your blood. VEGF is a substance that helps encourage the growth of new blood vessels. Your body makes more VEGF in certain situations. For example, if your tissues aren't getting enough oxygen, they may make more VEGF to prompt new blood vessels to grow to bring in more oxygen. Your lungs contain VEGF because good blood flow is vital there.

But VEGF also plays a role in cancer growth. Cancers need an ample blood supply. As a tumor grows larger, its cells can become hungry for oxygen, and the cancer encourages new blood vessels to grow to supply it. Most tumors show higher levels of VEGF. Sometimes, higher levels mean a lower chance of survival. In addition, VEGF may be important in the process of metastasis, in which cancer spreads to other places within your body. 

VEGF can also promote "leakiness" of blood vessels, which can lead to swelling in surrounding areas. This can be especially harmful during brain cancer, because it can increase pressure within the skull and lead to brain damage. 

Certain cancer treatment target VEGF, and this test may be used to tell how well the treatments are working.

Why do I need this test?

You may need this test if your doctor wants to find out how quickly a tumor is growing or whether your cancer is responding to treatments that counteract VEGF. A number of cáncer treatments work against VEGF. 

What other tests might I have along with this test?

If you have cancer, your doctor may order tests to check for possible complications linked to certain anti-VEGF treatments. These complications include:

  • High blood pressure

  • Liver damage

  • Underactive thyroid 

What do my test results mean?

Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.

Higher levels of VEGF have been linked to many types of cancer. 

How is this test done?

The test requires a blood sample, which is drawn through a needle from a vein in your arm.

Does this test pose any risks?

Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore. 

What might affect my test results?

If your blood sample is mishandled by your health care provider or the lab, the results may not be accurate.

How do I get ready for this test?

You don't need to prepare for this test. But be sure your doctor knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use. 

 
Related Items
Wellness Library
  Lifestyle Choices for Cancer Survivors
  Cancer Survivor Tips
  What's Your Cancer Risk?
  Work and Cancer: How to Cope
Content Type 134
  Carcinoid Tumor
Content Type 167
  Carcinoembryonic Antigen
Cancer Source
  Cancer: If You Are Diagnosed With It
  Insomnia
  Hypersomnia
  Enteral Feeding
  Parenteral Feeding
  Appetite Stimulation
  Taste Changes
  Hypercalcemia (High Calcium Level in the Blood)
  Constipation
  Coping with Cancer Through Mind, Body, Spirit, and Emotions
  Insurance Rights of Cancer Survivors
  Your Employment Rights as a Cancer Survivor
  Sample Appeal Letter for Services Denied as 'Not a Covered Benefit'
  Appearance: Taking Control During Treatment
  Struggling to Breathe: Tips for Managing Dyspnea
  Hair Loss--One Woman's Story
  Fatigue: Definition
  Compassionate Drug Use
  Understanding Research Studies
  Cancer and Spirituality
  Understanding Cancer Tests
  Helpful Hints for Coping with the Holidays
  Understanding Cancer Statistics
  The 12 Most Common Approaches to Complementary Cancer Therapy
  Parental Cancer: Questions and Answers About Changes in Family Rhythms and Routines
  Understanding the Provisions of Your Managed Care Plan
  First My Illness...Now Job Discrimination
  Osteoporosis in Women with Cancer
  Osteoporosis in Men with Cancer
  Hormonal Therapy: Managing Side Effects in Women
  Now! Don't Wait!
  Inspirational Poems
  Sexuality Issues for Women Being Treated for Cancer
  Maintaining Quality of Life When You Have Cancer
  For Kids: When Someone You Love Has Cancer
  For Teens: What to Expect If Your Loved One Has Cancer
Cancer FAQs
  Cancer FAQ
NCI Patient Summary
  Prevention of Colorectal Cancer
  Prevention of Endometrial Cancer
  Unusual Cancers of Childhood (PDQ®)
Quizzes
  Cancer Warning Signs Quiz
  Nutrition and Cancer Quiz
Adult Diseases and Conditions
  Grading and Staging of Cancer
  Diagnostic Procedures for Cancer: Overview
  General Information About Cancer: Overview
  Overview of Cancer
  Surgery
  Plastic Surgery Statistics
  Cancer Rehabilitation
  Online Resources - Cancer
  Breast Cancer Overview
Pediatric Diseases and Conditions
  About Cancer
  Alternative Therapy for Cancer
  Diagnosing Cancer
  Treatment for Cancer
  Causes of Cancer
  Coping with a Diagnosis of Cancer in Children
  Nutritional Requirements for a Child With Cancer