TBD ULUSLARARASI BİYOKİMYA KONGRESİ 2022 33. ULUSAL BİYOKİMYA KONGRESİ, İzmir, Türkiye, 26 - 30 Ekim 2022, ss.2-3
OBJECTIVES: When serum samples are taken into vacuum gel
tubes, the level of some analytes may change. In this study, in the
blood taken in different brand vacuum gel tubes, the gel; It was
investigated whether it had an effect on serum magnesium level.
Materials and Methods: Small (1 ml) and large (5 ml) blood samples
were collected randomly from 20 healthy volunteers in vacuum gel
tubes of brands A and B. Simultaneously, another sample , was
taken into a fifth tube with B brand gelless clot activator, left for 30
minutes, and centrifuged at 3500 rpm for 10 minutes. Magnesium
levels were measured in clinical chemistry autoanalyzer with
chemiluminescence method in triplicate. The mean of the results of
the five tubes were compared with each other.
RESULTS: Magnesium values of small and large amounts of serum
taken into A brand tubes were found to be statistically significantly
higher than the magnesium results of all B brand tubes (p<0.001).
No significant difference was found as a result of the comparison
of magnesium values of small and large amounts of serum taken
into B brand tubes with each other and with the tubes without gel
(p<0.05).
Conclusions: In our study, it was observed that the high magnesium
values detected in the gel tube of brand A were related to the
separator gel, and the increase in magnesium levels became more
pronounced as the sample volume decreased.