The aim of this study was to compare plasma urate (PU) concentrations using two different assays in patients receiving vitamin C supplementation. PU was measured using two routinely available enzymatic uricase methods: (1) uric acid plus method (ascorbate oxidase assay), and (2) uric acid method (non-ascorbate oxidase assay). Twenty patients receiving allopurinol were randomised to an increase in allopurinol dose or commence vitamin C 500 mg/d on a 1:1 ratio. Twenty patients not receiving allopurinol were randomised to start allopurinol or vitamin C 500 mg/d on a 1:1 ratio. Trough fasting samples for plasma ascorbate and urate were measured weekly until week 8. There was no significant difference in the mean PU measured by the two assays. In patients not receiving supplemental vitamin C the mean PU concentrations were identical for both assays. For patients receiving supplemental vitamin C the mean PU concentrations for the ascorbate oxidase assay was 0.525 mmol/L (SE 0.034) and for the non-ascorbate oxidase assay 0.510 mmol/L (SE 0.033), p = 0.079.There is a small non-significant difference in measured PU in patients receiving supplemental vitamin C between the two assays. The assay which does not include ascorbate oxidase results in consistently lower PU concentrations compared to the assay which includes ascorbate oxidase.
Pharmacology, Toxicology and Pharmaceutical Science
1
4%
Economics, Econometrics and Finance
1
4%
Other
1
4%
Unknown
8
33%
Attention Score in Context
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 14 May 2014.
All research outputs
#17,285,668
of 25,374,647 outputs
Outputs from Pathology
#808
of 1,528 outputs
Outputs of similar age
#144,714
of 240,961 outputs
Outputs of similar age from Pathology
#11
of 19 outputs
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