Ninety-nine urine samples (58 males, 38 females, median age
65 year [range: 6–93]; 3 samples were from anonymous patients)
were selected among positive S. pneumoniae samples stored at SSI
(previously boiled for 10 min, analysed and found positive in the inhouse
latex agglutination test described below, and stored in the freezer
at−20 °C). Since boiling is a part of the validated procedure, all positive
samples have been boiled before analysis. Both lateral tests are intended
for investigation of un-boiled samples, so these samples were tested
with this deviation from the instruction of the manufacturers.
Moreover, 71 urine samples frompatients (anonymous adults above
18 years of age) with positive blood cultures for S. pneumoniaewere selected
for investigation (stored, without boiling, in the freezer at−20 °C
until investigated).
For the samples fromthe routine laboratory at SSI, exemption for review
by the ethical committee system and for obtaining informed consent
was obtained from the Committee on Biomedical Research Ethics
for the Capital Region (protocol number 2001-54-0200) in accordance
with Danish law on quality development projects. Culture positive
S. pneumoniae urines were covered by the ethical committee protocol
number H-3-2013-027.