Evaluation of an alternative centrifugation protocol for reducing total turnaround time

Area of Science:

• Clinical Chemistry
• Laboratory Medicine
• Biochemical Analysis

Background:

• Sample quality is critical for accurate biochemical testing.
• Standardized centrifugation protocols are essential for consistent laboratory results.
• Optimizing centrifugation can improve laboratory efficiency.

Purpose of the Study:

• To evaluate an alternative, shorter centrifugation protocol.
• To assess the impact of reduced centrifugation time on 20 biochemical determinations in serum.
• To ensure adequate sample quality with a modified protocol.

Main Methods:

• Collected serum samples from 45 ambulatory patients.
• Utilized Becton Dickinson Vacutainer SST II Advance tubes.
• Compared a 7-minute centrifugation (2,530 x g) with a standard 10-minute protocol.

Main Results:

• Calcium, total bilirubin, and magnesium showed systematic bias.
• All analytes met desirable bias performance criteria, except magnesium (minimum criteria).
• The alternative protocol demonstrated acceptable accuracy for most analytes.

Conclusions:

• The alternative 7-minute centrifugation protocol is interchangeable with the standard 10-minute method.
• This shorter protocol ensures adequate sample quality for the studied biochemical analytes.
• Optimized centrifugation can be implemented without compromising diagnostic accuracy.