Evaluation of a simple method for the measurement of cytidine deaminase in serum and comparison with a reference method.
This study was designed to evaluate a cytidine deaminase (CD) assay modified to allow results to be achieved within one working day. Inter-batch variation for samples of mean (SD) CD activity, 10.2 (1.0) units, 17.5 (1.2) units and 31.7 (1.7) units were, 9.8%, 6.9% and 5.4% respectively (n = 26). The reference range (3.2-13.2 U) was similar in males and females and was independent of age. There was close correlation with a reference method (r = 0.96). The mean difference between methods was 2.7 U and the limits of agreement were -1.7 to 7.1 U. The results indicate that the short assay technique can produce results that are sufficiently accurate and precise to be clinically useful.
Thompson
P W
PW
Bone and Joint Research Unit, London Hospital Medical College, UK.
James
I T
IT
Rowell
L
L
Jones
D D
DD
D001172:Arthritis, Rheumatoid / Q000097:blood / Q000201:enzymology; D003564:Cytidine Deaminase / Q000097:blood*; D006801:Humans; D012016:Reference Values
D003564:Cytidine Deaminase