Preparation of In-House Quality Control Human Serum for Urea and its Use in Clinical Chemistry

Validation of the efficacy of pooled serum for serum glucose inhouse quality control material in comparison with commercial internal quality control in clinical chemistry laboratory

“…This study demonstrated significant stability in in-house quality control material stored at −20 °C to −30 °C over eight months, evidenced by consistently lower variability in glucose measurements compared to other storage temperatures. These findings align with previously published data by Sweta et al [ 27 ], Eliezer et al [ 28 ], Andrea et al [ 29 ], and Berhanu et al [ 30 ], solidifying the potential of frozen storage for maintaining QC material integrity. The use of in-house pooled serum, prepared separately, has been identified as a viable alternative to conventional control materials in developing countries.…”