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Procalcitonin (PCT) is a peptide precursor of the hormone calcitonin, the latter being involved with calcium homeostasis. It arises once preprocalcitonin is cleaved by endopeptidase . [ 1 ] It was first identified by Leonard J. Deftos and Bernard A. Roos in the 1970s. [ 2 ]
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
Calprotectin is a 24 kDa dimer of calcium binding proteins S100A8 and S100A9. [1] The complex accounts for up to 60% of the soluble protein content of the neutrophil cytosol. [2] [3] In vitro studies show that calprotectin has bacteriostatic and fungistatic properties, that arise from its ability to sequester manganese and zinc. [1]
Lab Tests Online is a family of peer-reviewed non-profit web resources about clinical laboratory testing. [ 1 ] [ 2 ] The site provides information on clinical laboratory tests as well as conditions that are managed or diagnosed by lab tests . [ 3 ]
Health Services Laboratories (HSL) is an independent provider of pathology and diagnostic services to the NHS. Formed in 2015, it is a partnership between The Doctors Laboratory, University College London Hospitals NHS Foundation Trust and the Royal Free London NHS Foundation Trust.
A 2013 review concluded moderate-quality evidence exists to support the use of the procalcitonin level as a method to distinguish sepsis from non-infectious causes of SIRS. [45] The same review found the sensitivity of the test to be 77% and the specificity to be 79%.
Bio Products Laboratory Limited [1] (BPL) is a company involved in the manufacture of human blood plasma products, located in Elstree, Hertfordshire, England. It is run as a commercial business and supplies plasma derived products to the National Health Service in the UK as well as to markets in over 45 countries.
Laboratory testing includes white blood cell count, ESR and CRP. These values are usually elevated in those with septic arthritis; however, these can be elevated by other infections or inflammatory conditions and are, therefore, nonspecific. [2] [11] Procalcitonin may be more useful than CRP. [28]