1999
DOI: 10.1203/00006450-199904020-00537
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Accelerated Red Blood Cell Turnover Can Invalidate the Use of Hemoglobin A1c as a Diagnostic Test for Cystic Fibrosis Related Diabetes

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Cited by 12 publications
(13 citation statements)
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“…Glycosylated haemoglobin has previously been shown to be inappropriate for the diagnosis of CFRD compared with OGTT [8,19–21]. It is probably the reduced life span of red blood cells in CF which means that the HbA 1c will be lower for a given level of glycaemia [22]. It is likely HbA 1c will also underestimate glycaemic control in CF subjects with established diabetes and so lower targets may be required than in non‐CF subjects to achieve a similar degree of glycaemic control.…”
Section: Discussionmentioning
confidence: 99%
“…Glycosylated haemoglobin has previously been shown to be inappropriate for the diagnosis of CFRD compared with OGTT [8,19–21]. It is probably the reduced life span of red blood cells in CF which means that the HbA 1c will be lower for a given level of glycaemia [22]. It is likely HbA 1c will also underestimate glycaemic control in CF subjects with established diabetes and so lower targets may be required than in non‐CF subjects to achieve a similar degree of glycaemic control.…”
Section: Discussionmentioning
confidence: 99%
“…Hemoglobin A1c cannot be used alone as a screening mechanism, because it underestimates overall glycemic control and does not correlate well with OGTT results 37 , 43 . Individuals with CF can have increased red blood cell turnover, making hemoglobin A1c spuriously low in these patients 45 …”
Section: Cf‐related Diabetesmentioning
confidence: 99%
“…A small study from Texas by Hardin et al 201 (abstract only) divided nine patients with CF and previously detected IGT into those with good pulmonary function (FEV 1 and FVC 82-92% predicted) and those with poor (FEV 1 and FVC 32-48% predicted). Red blood cell turnover was faster in those with poor function, which led them to conclude that HbA 1c level was not suitable as a screening test for CFRD.…”
Section: The Debate On the Use Of Glycated Haemoglobinmentioning
confidence: 99%