Hemoglobin

A blood sample is needed.

No special preparation is necessary.

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or a slight bruise. This soon goes away.

The hemoglobin test is a common test and is almost always done as part of a complete blood count (CBC). Reasons or conditions for ordering the hemoglobin test include: Before and after major surgery Blood in your stools, or vomit (if you throw up) Chronic medical problems, such as kidney disease or certain types of…

Normal results for adults vary, but in general are: Male: 13.8 to 17.2 grams per deciliter (g/dL) or 138 to 172 grams per liter (g/L) Female: 12.1 to 15.1 g/dL or 121 to 151 g/L Normal results for children vary, but in general are: Newborn: 14 to 24 g/dL or 140 to 240 g/L Infant: 9.5 to 13 g/dL or 95 to 130 g/L The…

LOWER THAN NORMAL HEMOGLOBIN Low hemoglobin level may be due to: Anemia Bleeding Bone marrow being unable to produce new red blood cells. This may be due to leukemia , other cancers, drug toxicity, radiation therapy, infection, or bone marrow disorders Chronic illness Chronic kidney disease Destruction of red blood…

There is little risk involved with having your blood taken. Veins and arteries vary in size from one person 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. Other risks associated with having blood drawn are slight, but may…

Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM. Blood disorders. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics . 21st ed. Philadelphia, PA: Elsevier; 2020:chap 124. Means RT Jr. Approach to the anemias. In: Goldman L, Cooney KA, eds.…