Serum hemoglobin is a test that measures the level of free hemoglobin in the liquid part of the blood (the serum). Free hemoglobin is the hemoglobin outside of the red blood cells. Most of the hemoglobin is found inside the red blood cells, not in the serum.
Blood hemoglobin; Serum hemoglobin
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 yo...
Definition Hemoglobin C disease is a blood disorder passed down through families. It leads to a type of anemia, which occurs when red blood cells break down earlier than normal. Alternative Names Clinical hemoglobin C Causes, incidence, and risk factors Hemoglobin C is an abnormal type of hemoglobin, the protein in red blood cells that carries oxygen. It is a type of hemoglobinopathy . The disease is caused by problem with a gene called beta globin. The disease most often occurs in African Americans. You are more likely to have hemoglobin C disease if someone in your family has had it.
Alternative Names Methemoglobin; Carboxyhemoglobin; Sulfhemoglobin Normal Values The following values represent the percentage of hemoglobin derivatives based on total hemoglobin: Carboxyhemoglobin: less than 3% (but may be as high as 15% in smokers) Methemoglobin: less than 3% Sulfhemoglobin: undetectable What abnormal results mean High levels of hemoglobin derivatives can lead to significant health problems. The altered forms of hemoglobin do not allow oxygen to be moved properly through the body. This can lead to tissue death. The following values, except sulfhemoglobin, represent the percentage of hemoglobin derivatives based on total hemoglobin: Carboxyhemoglobin: 10 - 20% symptoms of carbon monoxide poisoning begin to appear 30% severe carbon monoxide poisoning present 50-80% results in deadly carbon monoxide poisoning Methemoglobin: 10-25% results in cyanosis 35-40% results in shortness of breath and headache Over 60% results in lethargy and stupor Over 70% results in death Sulfhemoglobin: Values ...
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