Roche cobas b 123 User Manual

Roche Diagnostics
Instructions for Use · Version 13.0 143
cobas b 123 POC system 6 Measurement
Preanalytics
Clot Catcher PRO The Clot Catcher PRO, which is placed on top of a syringe, prevents blood clots and
tissue particles from entering the cobas b 123 POC system.
The Clot Catcher PRO is only suitable for measurements in capillary mode.
q
For more information, refer to the accompanying package inserts for the Clot Catcher and
Clot Catcher PRO.
Sample handling
Whole blood
Withdraw whole blood samples using heparinized syringes, capillaries, or the
Roche MICROSAMPLER PROTECT and analyze them as soon after their collection
as possible. Remove air bubbles from the sample collection container immediately
after collecting the sample.
Immediately after withdrawing the sample with syringes, thoroughly mix the sample
with anticoagulant. This can be done by rolling the sample between both hands or
gently rotating. Properly label the samples, following the standard documentation
procedure.
Despite following correct sample collection procedures, errors can still arise in the
blood gas analysis:
o Insufficient mixing of the sample after its collection and before its measurement
o Ambient air contamination caused by air bubbles that were not removed after
sample collection
o Metabolic changes in the sample
WARNING
Failure to measure samples for tHb, SO
2
and Hct parameters immediately after
collecting the sample in a capillary may lead to incorrect patient results
Failure to measure samples for tHb, SO
2
and Hct values, which were collected in
capillaries, immediately after collecting the sample may lead to incorrect patient results,
which may endanger patient lives.
r When measuring samples for tHb, SO
2
and Hct values, which were collected in
capillaries, perform the measurement immediately after collecting the sample.
Glass sample container o Samples collected in glass sample containers can be kept up to 15 minutes at room
temperature.
o If you are not able to measure these samples within 15 minutes of their collection,
place them temporarily in ice water. Measure these samples within 30 minutes of
their collection. If you have not measured these samples 60 minutes after their
collection, dispose them.
o Samples with a PO
2
level above 200 mmHg (26 kPa) should be collected in a glass
container if you are not able to measure them within 15 minutes of their
collection.
Plastic sample container Samples collected in plastic sample containers can be kept up to 30 minutes at room
temperature.

Roche cobas b 123 Specifications

General

Brand	Roche
Model	cobas b 123
Category	Medical Equipment
Language	English