Test strip enzyme immunoassays and the fast screening of nortestosterone and clenbuterol residues in urine samples at the parts per billion level

Development and evaluation of a rapid lateral flow immunochromatographic strip assay for screening 19‐nortestosterone

“…The results shown in Table 2 indicated that the correlation between the two methods was good. Additionally, after storing at 37°C for 7 days, this strip also had a better effect than enzyme immunoassay test strip, due to the stability of gold as labeling agent (Ploum et al, 1991).…”

A new monoclonal antibody for the sensitive detection of atrazine with immunoassay in microtiter plate and dipstick format

“…i This work was supported by a grant of the Deutsche Forschungsgemeinschaft (Ho 383/26-1). Dipstick or test strip assays, to date used as a diagnostic tool for monitoring drugs (Litman et al, 1983), toxins (Usleber et al, 1991;Schneider et al, 1991), hormones (Ploum et al, 1991), and pathogens, allow a rapid, qualitative determination of analytes. Our objective was to provide a comparable field test system for the screening of water samples for atrazine without expensive equipment using the mAh immobilized on a membrane support.…”

Electrochemical immunosensors for the detection of 19-nortestosterone and methyltestosterone in bovine urine

“…Competitive EIA methods for determination of a number of anabolic residues including nortestosterone have been developed [33,34]. Concentrations of nortestosterone, which reduced the signal by 50% was reported as 8 pg/well.…”