Definition The vitamin B12 level is a test to tell how much vitamin B12 is in your blood. 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 Yo...
Generic Name: CYANOCOBALAMIN - INJECTION Pronounced: (SYE-an-oh-koe-BAL-a-min) Cyanocobalamin (Vitamin B-12) Inj Interactions
Your doctor or pharmacist may already be aware of any
possible drug interactions and may be monitoring you for them. Do not start,
stop, or change the dosage of any medicine before checking with your doctor or
Before using this medication, tell your doctor or
pharmacist of all prescription and nonprescription/herbal products you may use,
drugs that may affect blood cell production (e.g.,
chloramphenicol, anti-cancer drugs, HIV drugs)
other vitamins/nutritional supplements (especially folic
Certain other drugs may interfere with laboratory tests
for vitamin B12 levels, possibly causing false test results. Tell laboratory
personnel and all your doctors if you take any of the
anti-infective drugs (e.g., amoxicillin,
Alternative Names Macrocytic anemia Treatment Treatment depends on the cause of B12 deficiency anemia. Pernicious anemia requires lifelong vitamin B12 replacement, most often using injections. Some patients can get enough supplementation with high-dose tablets of oral vitamin B12. People with anemia due to a lack of dietary vitamin B12 may be told to take vitamin supplements and follow a more balanced diet. Treatment may start with vitamin B12 injections. Anemia caused by poor digestion and absorption is treated with vitamin B12 injections until the condition improves. These shots are given every day and then every week at first, and then every month. Many people may need these shots once a month for the rest of their life. The shots may no longer be needed after Crohn's disease, celiac disease, or alcoholism is properly treated. Support Groups Expectations (prognosis) Treatment for this form of anemia is usually effective. Any damage to nerves may be permanent, especially if treatment is not st...
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