Endocrine Abstracts

Background: Chromogranin A (CgA) is essential for the formation of secretory granules and sequestration of hormones in neuroendocrine cells. Measurement of CgA levels is included in the diagnostic procedure of neuroendocrine tumors and pheochromocytoma. The aim of this study was to assess the reliability of the Kryptor assay for CgA measurement.Methods: Imprecision of the Kryptor CgA assay was determined with two levels of CgA concentration. Reference va...

Background: Measurement of serum cortisol levels can be useful in the diagnosis of conditions of both adrenal insufficiency and excess. Several methods are available for the measurement of the cortisol levels and immunoassays are commonly used in routine laboratories. The aim of our study was therefore to compare four different automated immunoassays for measurement of cortisol in serum.Methods: Serum samples of seventy two healthy volunteers were used f...

Background: Measurements of TSH, free tetraiodothyronin (FT4) and triiodothyronin (FT3) are essential to achieve assessment of thyroid function. Luminescent Oxygen Channelling Immunoassays (LOCI) have recently been developed for the measurement of biomarkers of thyroid function. Such homogeneous immunoassays allow a faster delivery of the results. The aim of our study were therefore to determine the reference values for LOCI TSH, FT4 and FT<sub...