Coronary risk profile
Definition
A coronary risk profile involves a battery of blood tests to evaluate cholesterol
and triglycerides
. These are indicators of risk for heart disease
.
Alternative Names
Lipoprotein/cholesterol analysis; Lipid profile
How the Test is Performed
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and an elastic band is placed around the upper arm to cause the vein to swell with blood.
A needle is inserted into the vein, and the blood is collected in an airtight vial or a syringe. During the procedure, the band is removed to restore circulation. Once the blood has been collected, the needle is removed and the puncture site is covered with gauze or with a bandage to stop any bleeding.
In infants or young children, the area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small tube), on a slide, onto a test strip, or into a small container. Cotton or a bandage may be applied to the puncture site if there is any continued bleeding.
The blood is analyzed by the laboratory to determine the levels of:
-
Triglycerides
-
LDL
(low density lipoprotein) cholesterol
-
HDL
(high density lipoprotein) cholesterol
- Total cholesterol
- Serum VLDL
(very low density lipoprotein) cholesterol
How to Prepare for the Test
You should not eat or drink anything except water for 9-12 hours before having your blood drawn.
How the Test Will Feel
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the Test is Performed
The coronary risk profile is most often performed:
- As a screening examination to determine the general health of the person
- When there is a history of heart disorders or other disorders related to atherosclerosis
- To determine the effect of diet and medications to control hypercholesterolemia
Normal Results
-
Triglycerides
: 10 to 150 mg/dL
-
LDL
cholesterol: 60 to 130 mg/dL
-
HDL
cholesterol: greater than 40 mg/dL
- Total cholesterol: less than 200 mg/dL
-
VLDL
: 2 to 38 mg/dL
Note: mg/dL = milligrams per deciliter
The ideal values for patients with known coronary artery disease are different from those for patients without coronary disease. High values of HDL (60 or higher) are protective and are therefore desirable.
Additional blood tests, such as C-reactive protein (CRP), may be added to the profile in some laboratories.
What Abnormal Results Mean
Elevated values indicate an increased risk for atherosclerosis and related disorders, including heart disease.
Risks
There is very little risk for having your blood drawn. However, veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
- Excessive bleeding
- Fainting or feeling light-headed
-
Hematoma
(blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
- Multiple punctures to locate veins
Considerations
Conditions under which the test may be performed:
Review Date: 8/24/2007
Reviewed By: A.D.A.M. Editorial Team: Greg Juhn, M.T.P.W., David R. Eltz, Kelli A. Stacy. Previously reviewed by Glenn Gandelman, MD, MPH, Assistant Clinical Professor of Medicine, New York Medical College, Valhalla, NY. Review provided by VeriMed Healthcare Network (7/17/2006).
