Quantitative capillary reversed passive latex agglutination test for C-reactive protein (CRP) in the dog.
A capillary reversed passive latex agglutination test (capillary RPLA) was developed which allows quantification of serum C-reactive protein (CRP) within approximately 15 min. The logarithmic regression line (calibration curve) obtained after measuring each CRP concentration three times in twofold dilutions of a standard canine serum containing 222 micrograms/ml of CRP was y = 6.394 + 0.030x (r = 0.995). Capillary RPLA permitted quantification of CRP in the range 6.9-222 micrograms/ml. The coefficients of variation ranged from 10.28% to 12.40%. The recovery rates (percentage recovery) of CRP by capillary RPLA were within the range 87% to 106%. On measuring the CRP concentrations in sera from 78 dogs by capillary RPLA, single radial immunodiffusion (SRID) and enzyme-linked immunosorbent assay (ELISA), close correlations were demonstrated between SRID and capillary RPLA (y = 7.250 + 1.109x, r = 0.978), between SRID and ELISA (y = 3.042 + 1.059x, r = 0.967), and between capillary RPLA and ELISA (y = 1.778 + 0.929x, r = 0.962). Capillary RPLA may be considered useful as a routine biochemical technique for measurement of serum CRP concentration in the dog.
Tagata
K
K
Tagata Animal Hospital, Shimane, Japan.
Yokoyama
S
S
Ginbo
T
T
Honda
M
M
Okimura
T
T
Odakura
M
M
Nomura
M
M
Yamamoto
S
S
D000818:Animals; D002097:C-Reactive Protein / Q000032:analysis*; D002138:Calibration; D004283:Dog Diseases / Q000097:blood*; D004285:Dogs; D007841:Latex Fixation Tests / Q000379:methods / Q000662:veterinary*; D015203:Reproducibility of Results
D002097:C-Reactive Protein