Performance of chemically modified plastic blood collection tubes

Area of Science:

• Clinical Chemistry
• Analytical Biochemistry
• Materials Science

Background:

• Commercially available serum blood collection tubes (BCTs) often contain surfactants that can interfere with specific clinical assays.
• The development of alternative BCTs free from problematic surfactants is crucial for accurate diagnostic testing.

Purpose of the Study:

• To evaluate the performance of novel chemoPET blood collection tubes (BCTs) against standard glass tubes and other commercial BCTs.
• To assess the suitability of chemoPET tubes for analyzing cortisol, total triiodothyronine (TT3), total thyroxine (TT4), and routine clinical chemistry analytes.

Main Methods:

• Blood specimens from 60 healthy volunteers and pooled quality control (QC) materials were analyzed.
• Analyte concentrations were measured using Immulite 1000 and Siemens RxL instruments.
• Statistical analysis (t-tests, ANOVA) and bias assessment against glass tubes were performed.

Main Results:

• No statistically or clinically significant differences were observed in analyte concentrations between chemoPET tubes and other BCTs, including glass tubes.
• Analyte concentrations in chemoPET tubes remained within acceptable bias limits derived from biological variation.

Conclusions:

• The modified and aged chemoPET tubes, lacking problematic surfactants, are a suitable alternative to conventional serum BCTs.
• These tubes minimize interference issues encountered with certain clinical assays on specific analytical platforms.