Christie Clinic - Medicine for Your Life

Our website is currently having technical difficulties. To view the site, please click here

Health Encyclopedia

Health Encyclopedia

An invaluable resource of health information.

HCG blood test - quantitative

A quantitative human chorionic gonadotropin (HCG) test measures the specific level of HCG in the blood. HCG is a hormone produced during pregnancy.

See also:

  • Alternative Names

    Serial beta HCG; Repeat quantitative beta HCG; Human chorionic gonadotrophin blood test - quantitative; Beta-HCG blood test - quantitative; Pregnancy test - blood - quantitative

  • How the test is performed

    Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.

    Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.

    Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.

    In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.

  • How to prepare for the test

    No special preparation is necessary.

  • 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

    HCG appears in the blood and urine of pregnant women as early as 10 days after conception. Quantitative HCG measurements can help to diagnose abnormal preqnancies, such as ectopic pregnancies, molar pregnancies, and those that will miscarry. It is also used as part of a screening test for Down Syndrome.

    This test is also done to diagnose abnormal conditions unrelated to pregnancy that can raise HCG levels.

  • Normal Values

    HCG levels rise rapidly during the first trimester of pregnancy and then slightly decline.

  • What abnormal results mean

    Higher-than-normal levels may indicate:

    Lower-than-normal levels may indicate:
  • What the risks are

    There is very little risk involved with having your blood taken. Veins and arteries vary in size from one patient to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.

    Other risks associated with having blood drawn are slight but may include:

    • Excessive bleeding
    • Fainting or feeling light-headed
    • Hematoma (blood accumulating under the skin)
    • Infection (a slight risk any time the skin is broken)
  • Special considerations

    Drugs that can decrease HCG measurements include diuretics and promethazine.

    Drugs that can increase HCG measurements include anticonvulsants, anti-parkinsonian drugs, phenothiazine, and promethazine.

  • References

    Webster RA. Reproductive function and pregnancy. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 25.

    Lee P, Pincus MR, McPherson RA. Diagnosis and management of cancer using serologic tumor markers. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 74.

    Morrison LJ. General approach to the pregnancy patient. In: Marx J, ed. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 6th ed. St Philadelphia, Pa: Mosby Elsevier; 2006:chap 176.

Review Date: 10/28/2008

Reviewed By: Linda Vorvick, MD, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2014 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
adam.com
Christie Clinic Christie Clinic at the Family Medical Center in Paris Photo Christie Clinic at the Family Medical Center in Paris
727 East Court Street Paris, IL 61944 Dermatology: 366-1248; Vein and Vascular: 366-2670
Christie Clinic Christie Clinic on University Photo Christie Clinic on University
101 West University Avenue Champaign, IL 61820 Main Phone: (217) 366-1200
Billing Services: (217) 366-1382
Toll Free: (888) 391-0412
Christie Clinic Christie Clinic on Windsor/Convenient Care Photo Christie Clinic on Windsor/Convenient Care
1801 West Windsor Road Champaign, IL 61822 (217) 366-8000
Christie Clinic Christie Clinic at Presence Covenant Photo Christie Clinic at Presence Covenant
1400 West Park Street Urbana, IL 61801 (217) 366-1200
Christie Clinic Christie Clinic in Rantoul Photo Christie Clinic in Rantoul
209 West Borman Drive Rantoul, IL 61866 (217) 892-9671
Christie Clinic Christie Clinic in Mahomet/Convenient Care Photo Christie Clinic in Mahomet/Convenient Care
1001 Commercial Drive Mahomet, IL 61853 Main Number: (217) 586-6600 Convenient Care: (217)366-8130
Christie Clinic Christie Clinic in Tuscola Photo Christie Clinic in Tuscola
300 North Main Street Tuscola, IL 61953 (217) 253-9258
Christie Clinic CU Sleep Photo CU Sleep
1207 South Mattis Avenue Champaign, IL 61821 (217) 355-1684
Christie Clinic Christie Clinic Cancer Center Photo Christie Clinic Cancer Center
109 West University Avenue Champaign, IL 61820 (217) 366-5180
Christie Clinic Convenient Care in County Market (Kirby & Duncan) Photo Convenient Care in County Market (Kirby & Duncan)
2901 West Kirby Avenue Champaign, IL 61821 (217) 366-8130
Christie Clinic Christie Clinic in Urbana/Convenient Care Photo Christie Clinic in Urbana/Convenient Care
1710 East Windsor Road Urbana, IL 61802 (217) 344-9440
Christie Clinic Christie Clinic in Danville on Logan Photo Christie Clinic in Danville on Logan
800 North Logan Avenue Danville, IL 61832 (217) 431-8930
Christie Clinic Christie Clinic on Fox Drive Photo Christie Clinic on Fox Drive
2110 Fox Drive, Suite B Champaign, IL 61820
Christie Clinic Christie Clinic in Monticello at Kirby Medical Group Specialty Clinic Photo Christie Clinic in Monticello at Kirby Medical Group Specialty Clinic
1109 B North State Street Monticello, IL 61856 (217) 366-1304
Gibson Area Hospital
1120 N Melvin Gibson City, IL 60936 (217) 784-2240
Christie Clinic Christie Clinic in Mattoon Photo Christie Clinic in Mattoon
105 B Professional Plaza Mattoon, IL 61938 (217) 345-3000
Christie Clinic Sarah Bush Lincoln Health System Photo Sarah Bush Lincoln Health System
1000 Health Center Drive Mattoon, IL 61938 (217) 258-2588
Christie Clinic The Champaign SurgiCenter Photo The Champaign SurgiCenter
1702 S. Mattis Avenue Champaign, IL 61821 (217) 326-2030
Christie Clinic The Carle Foundation Hospital Photo The Carle Foundation Hospital
611 West Park Street Urbana, IL 61801 (217) 383-3311
Iroquois Memorial Hospital
200 E. Fairman Ave. Watseka, IL 60970 (815) 432-5841
Christie Clinic Christie Clinic in Savoy Photo Christie Clinic in Savoy
501 North Dunlap Avenue Savoy, IL 61874 Transformations: (217) 366-7460 Internal Medicine: (217) 366-5434 Ophthalmology: (217) 366-1250
Christie Clinic on West Park Street
1405 West Park Street Urbana, IL 61801 217-366-1237
Christie Clinic in Monticello
107 West Main Street Monticello, IL 61856 217.762.3352
Christie Clinic Christie Clinic in Decatur Photo Christie Clinic in Decatur
100 South Water Street Suite 103 Decatur, IL 62523 217-362-0661- telephone
Christie Clinic Christie Clinic in Danville on Vermilion/Convenient Care Photo Christie Clinic in Danville on Vermilion/Convenient Care
3545 North Vermilion Street Danville, IL 61832 (217) 442-8611