There is a significant lack of data concerning analytical
systems designed for the measurement of actinomycin
D concentrations. Previously published assays
include a thin-layer chromatography (TLC) assay to
measure tritium-labelled actinomycin D [7] in addition
to ELISA [17], flow cytometry [18] and radioimmunoassays
[19]. None of these methods is suitable
for specific determination of actinomycin D concentrations
in clinical samples, either due to the use of
radiolabeled drug or because of a lack of sensitivity or
specificity for the parent drug as opposed to metabolites
of actinomycin D.