Fibrinogen

This is a blood test to determine the amount of fibrinogen in the blood. Fibrinogen is a very important part of the blood-clotting system. It is converted to fibrin by action of thrombin during the clotting process. Low levels of fibrinogen are found in patients with liver disease, persons that have had large amounts of blood transfusions, malnourishment, and certain clotting disorders.

PREPARATION FOR TEST

  • No preparation or fasting is necessary.

  • Tell the person performing the test if you are pregnant.

NORMAL FINDINGS

  • Adult: 150-400 mg/dL or 1.5-4 g/L (SI units)

  • Results are increased during pregnancy

  • Newborn: 125-300 mg/dL or 1.25-3 g/L

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.

MEANING OF TEST

Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.

OBTAINING THE TEST RESULTS

It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.