Roche Diagnostics
Instructions for Use · Version 13.0 141
cobas b 123 POC system 6 Measurement
Preanalytics
Lactate Patient preparation: Draw after at least 2 hours of physical rest. Small amounts of
physical exertion can cause an increase in lactate concentration.
Blood samples should be analyzed immediately after they are collected, and no longer
than 15 minutes after collection. Blood samples can metabolize quickly and cause an
increase in lactate concentration within a few minutes.
Significant arteriovenous differences exist depending on forearm activity and the
oxygenation of the forearm musculature. Deproteinize samples using ice-cold
perchloric acid immediately after they are collected. When using glycolytic inhibitors,
you can work with heparin blood without deproteinization. These samples are stable
for up to 2 hours after its collection.
Sample collection, specifically for bilirubin measurements
WARNING
Bilirubin sample collection
r Treat whole blood samples as light-sensitive samples:
o Protect sample containers from light during transport.
o Avoid leaving sample containers in direct sunlight
r Samples should be analyzed immediately after collection.
r Switch off phototherapy light before and during sampling from neonatal patients.
Sample collection, specifically for dialysis solution measurement
WARNING
Fresh dialysis solution sample collection
r Samples from the fresh dialysis solution may only be taken with an untreated syringe
free from coagulant inhibitors.
Sample collection containers
WARNING
Sample collection containers
r Use only Roche sample collection containers.
q
Roche recommends that you use its sample collection containers.
To Next Page
Loading...
Need help?
General
