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HbA1c [Carious Legion Clinic Help]

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what_is_normal:hba1c

HbA1c

What is glycohemoglobin (glycosylated hemoglobin) test? It is a blood test for blood sugar and reflects a person’s average blood sugar over 3 months because HbA1c binds irreversibly to glucose (glycated Hb) throughout the life span of RBC (120 days).

  • Glycohemoglobin Measures the amount of the blood sugar bound to certain components of hemoglobin A and is expressed as %
  • In normal adult hemoglobin, hemoglobin A comprises 97% of total Hb
  • Hb A contains three minor components; HbA1a, HbA1b, HbA1c (A1C)
  • HbA1c binds irreversibly to glucose (glycated Hb) throughout the life span of RBC (120 days). Hb A1c is also known as A1C.
  • A1C has high correlation with average plasma glucose and diabetes complications such as retinopathy, renopathy, neuropathy, and others.
  • A normal individual’s A1C value would be 4-6% (using the DCCT assay)
  • The test has other names such as HbA1c test, and A1C test.

How is A1C being used?

  • A1C is directly proportional to the mean (average) blood glucose as well as microvascular and macrovascular complications of DM.
  • HbA1c has become a standard assessment of DM medical care since 1993
  • HbA1c reflects average glycemia (blood sugar) over the previous 3 months
  • HbA1c has been used to monitor glycemic control and to determine whether the patient has achieved the treatment goal
  • HbA1c less than 7% has become a part of ADA’s standard care since 1995 for most non-pregnant adult diabetes patients.

Currently, the American Diabetes Association recommendation for non-pregnant patients is less than 7%


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what_is_normal/hba1c.txt · Last modified: 2013/06/06 22:06 by brent