Roche cobas b 123 - Capillary Tubes; Roche MICROSAMPLER PROTECT; Sample Collection Container Accessories; Syringes

Roche Diagnostics
142 Instructions for Use · Version 13.0
6 Measurement cobas b 123 POC system
Preanalytics
Syringes
If you use another manufacturer’s product with liquid heparin as a clot inhibitor,
sample collection containers should not be larger than required for the blood volume.
This minimizes the effect of the clot inhibitor on blood thinning. Plastic syringes are
normally used, but there are cases when the use of plastic syringes is not appropriate,
for example, when PO
2
values are expected to be outside the normal range. If high
PO
2
values are expected, the sample should be analyzed as quickly as possible after its
collection.
NOTICE
Using non-heparinized syringes or syringes with liquid heparin may lead to
inaccurate patient results
Non-heparinized syringes and syringes filled with liquid heparin, whose volume exceeds
the sample volume, does not prevent blood clotting in the syringe. Blood clots compromise
the integrity of the blood sample, which may lead to inaccurate patient results.
r Use syringes containing balanced heparin salts. Roche recommends using the
Roche MICROSAMPLER PROTECT for blood collection
Capillary tubes
Microhematocrit capillary tubes or capillary tubes with ceramic caps should not be
used because they can damage the fill port of the instrument.
To prevent damage to your instrument, Roche recommends using
Roche MICROSAMPLER PROTECT for blood collection. If you use glass capillary
tubes from other manufacturers, ensure that they have heat-polished ends.
When using stirring rods offered by some manufacturers, remove these rods before
inserting the sample to avoid clogging the sample path of the system.
Roche MICROSAMPLER PROTECT
To make arterial sample collection easier and provide more comfort for the patient,
the Roche MICROSAMPLER PROTECT
(1)
was developed.
The Roche MICROSAMPLER PROTECT consists of one curved plastic capillary
tube (~220 L) in a plastic container, and is ideally suited to atraumatic arterial blood
collection.
Sample collection container accessories
NOTICE
Preventing clogging of the sample path during measurement
To prevent clogging of the sample path during measurement of critical blood (for example,
when sampling blood of newborns from earlobes or heels).
r The use of the Clot Catcher is recommended.
Clot Catcher The Clot Catcher, which is placed on top of a capillary or
Roche MICROSAMPLER PROTECT, prevents blood clots and tissue particles from
entering the cobas b 123 POC system.
The Clot Catcher is only suitable for measurements in capillary mode.
(1) is a trademark of Roche