Details

Autor(en) / Beteiligte

• Weykamp, C W
• Penders, T J
• Siebelder, C W
• Muskiet, F A
• van der Slik, W

Titel

Interference of carbamylated and acetylated hemoglobins in assays of glycohemoglobin by HPLC, electrophoresis, affinity chromatography, and enzyme immunoassay

Ist Teil von

• Clinical chemistry (Baltimore, Md.), 1993-01, Vol.39 (1), p.138-142

Ort / Verlag

England

Erscheinungsjahr

1993

Quelle

MEDLINE

Beschreibungen/Notizen

• In vitro-synthesized carbamylated and acetylated hemoglobins interfered in assays of glycohemoglobin by HPLC and electrophoresis but had no effects on results obtained by affinity chromatography and enzyme immunoassay. Correlations between long-term serum urea concentrations and glycohemoglobin percentages revealed that, in vivo, carbamylated hemoglobin equivalent to 0.063% of total hemoglobin is formed for every 1 mmol/L of serum urea. The use of acetylsalicylate, either chronically in small doses (200-300 mg/day) or for 1 week at 2000 mg/day, did not cause significant interference from acetylhemoglobin, formed in vivo. We conclude that interference from carbamylated hemoglobin explains only a small part of existing discrepancies between results of glycohemoglobin assays in current use. The interfering effect of acetylhemoglobin formed in vivo with acetyl-CoA as substrate is as yet unknown.