Automated digoxin immunoassays with the Abbott TDx, Dade Stratus, and Du Pont aca were evaluated against an RIA similar to the Centers for Disease Control Candidate Reference Method. All three automated methods correlated poorly with the reference method. Particularly disconcerting were the falsely increased values (up to 0.6 micrograms/L) obtained by the Stratus for blank specimens. We discuss...

Two quantitative, automated methods for the determination of C reactive protein (CRP) were compared: turbidimetry (Cobas Fara II, Roche, Welwyn Garden City, UK) and fluorescence polarisation TDx, Abbott, Wokingham, UK). One hundred and twenty routine serum samples submitted for measurement of CRP were tested using both procedures. The results were compared using regression line analysis and sho...

We study the qualitative properties of functions belonging to corresponding De Giorgi classes ?Br(1??)(x0)?(x,|?(u?k)±|)dx???Br(x0)?(x,(u?k)±?r)dx,where ?, r?(0,1), k?R and function ? satisfies non-logarithmic condition (r?n?Br(x0)[?(x,vr)]sdx)1s(r?n?Br(x0)[?(x,vr)]?tdx)1t?c(K)?(x0,r),r?v?K?(r), under some assumptions on ?(r) ?(x0,r) numbers s, t>1. These conditions generalize known logarithmic...

the notion of absorbent ordered filters in implicative semigroupsis introduced, and its fuzzification is considered. relations among (fuzzy) orderedfilters, (fuzzy) absorbent ordered filters, and (fuzzy) positive implicativeordered filters are stated. the extensionproperty for (fuzzy) absorbent orderedfilters is established. conditions for (fuzzy) ordered filters to be (fuzzy)absorbent ordered ...

Sirs, The recent paper by Clark et al. (1998) highlighted many issues regarding the interpretation of short synacthen tests (SST). In 1995 as part of an extensive pre-launch evaluation of the cortisol method on the Bayer/Chiron ACS180 (ACS) we compared responses to SST with two established methods (Abbot TDx, nˆ 45 and Farmos, nˆ 46). Like Clark et al. (1998) we noted the non-gaussian nature of...