Abstract:
BACKGROUND:Ascorbic acid can interfere with methodologies involving redox reactions, while comprehensive studies on main chemistry analysers have not been reported. We therefore attempted to determine the interference of ascorbic acid with analytes on the Beckman Synchron LX20. METHODS:Various concentrations of ascorbic acid were added to serum, and the serum analytes were measured on the LX20. RESULTS:With a serum ascorbic acid concentration of 12.0 mmol/L, the values for sodium, potassium, calcium and creatinine increased by 43%, 58%, 103% and 26%, respectively (P<0.01). With a serum ascorbic acid concentration of 12.0 mmol/L, the values for chloride, total bilirubin and uric acid decreased by 33%, 62% and 83%, respectively (P<0.01), and were undetectable for total cholesterol, triglyceride, ammonia and lactate. There was no definite influence of ascorbic acid on analytical values for total CO(2), urea, glucose, phosphate, total protein, albumin, amylase, creatine kinase, creatine kinase-MB, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, total iron, unbound iron-binding capacity or magnesium. CONCLUSIONS:Ascorbic acid causes a false increase in sodium, potassium, calcium and creatinine results and a false decrease in chloride, total bilirubin, uric acid, total cholesterol, triglyceride, ammonia and lactate results.
journal_name
Ann Clin Biochemjournal_title
Annals of clinical biochemistryauthors
Meng QH,Irwin WC,Fesser J,Massey KLdoi
10.1258/000456305774538274subject
Has Abstractpub_date
2005-11-01 00:00:00pages
475-7issue
Pt 6eissn
0004-5632issn
1758-1001journal_volume
42pub_type
杂志文章abstract::The diagnostic usefulness of fasting total serum bile acids (SBA/F) in the detection of liver diseases and assessment of different aspects of hepatic function alteration was evaluated in 61 healthy subjects and 186 patients with liver disease. The value of SBA/F was compared with other routine tests. In 49 healthy sub...
journal_title:Annals of clinical biochemistry
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journal_title:Annals of clinical biochemistry
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journal_title:Annals of clinical biochemistry
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journal_title:Annals of clinical biochemistry
pub_type: 杂志文章,评审
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journal_title:Annals of clinical biochemistry
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