The journal paper "The transition from gel separatory serum tubes to lithium heparin tubes in the clinical laboratory" discusses the advantages of lithium heparin over the traditional gel separatory serum tubes, which is the focus of this question is that why the does laboratories still prefer gel separatory serum tubes?
Compatibility with assays, gel separator serum tubes are widely used and accepted for various laboratory tests. Laboratories often validate their assays using specific tube types, and switching to a different type of tube may require revalidation or adjustment of testing procedures. Next is sample stability, gel separator serum tubes are known for their stability in storing serum samples. The gel barrier effectively separates serum from cells, reducing the risk of hemolysis (breakdown of red blood cells) and preserving the integrity of the sample for longer periods. Ease of use: Gel separator serum tubes are convenient to use, requiring minimal handling compared to tubes containing anticoagulants like lithium heparin. This simplicity can help streamline laboratory workflows and reduce the risk of errors during sample processing. While lithium heparin gel tubes offer advantages such as plasma preparation for certain assays and reduced risk of clot formation, the decision to use a particular tube type depends on the specific requirements of the laboratory, the assays being performed, and considerations related to sample stability, workflow efficiency, and cost-effectiveness.
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