PMID- 29662857 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220317 IS - 2287-979X (Print) IS - 2288-0011 (Electronic) IS - 2287-979X (Linking) VI - 53 IP - 1 DP - 2018 Mar TI - Cryohemolysis, erythrocyte osmotic fragility, and supplementary hematimetric indices in the diagnosis of hereditary spherocytosis. PG - 10-17 LID - 10.5045/br.2018.53.1.10 [doi] AB - BACKGROUND: Hereditary spherocytosis (HS) is a chronic hemolytic anemia characterized by microspherocytes in the peripheral blood and increased erythrocyte osmotic fragility (EOF). This study evaluated the cryohemolysis test (CHT); initial hemolysis (IH); immediate and incubated hemolysis percentage in 5.5 g/L NaCl (H5.5); mean corpuscular hemoglobin concentration (MCHC); red blood cell distribution width (RDW); and Hb/MCHC, Hb/RDW, and MCHC/RDW ratios for the diagnosis of HS. METHODS: Data from 13 patients with HS were evaluated at the Instituto de Bioquimica Aplicada and compared with data from 14 unaffected individuals and 11 patients with anemia due to another etiology. Total blood and reticulocyte counts, CHT, and immediate and incubated EOF were performed in all subjects; sensitivity, specificity, efficiency, and Youden index (YI) were calculated. RESULTS: Eight patients with HS had MCHC >/=345 g/L, 10 had RDW >/=14.5%, 12 had IH >5.0 g/L, 11 had immediate H5.5 >/=5%, and 13 had incubated H5.5 >/=50% (the cut-off value to consider HS). The efficiency and YI were: immediate H5.5 (0.94-0.85), incubated H5.5 (0.89-0.82), IH (0.89-0.78), MCHC (0.87-0.62), CHT (0.84-0.54), and Hb/MCHC (0.71-0.56), respectively. The calculated ratios could distinguish subjects with HS from unaffected individuals (P<0.05), but not those with anemia of another etiology (P>0.05). CONCLUSION: Although the CHT and supplementary hematimetric indexes were useful to differentiate individuals with SH from healthy controls, they cannot distinguish from anemias of other etiology. CHT and MCHC, in addition to EOF, are recommended for diagnosing HS patients because of their low cost and efficiency. FAU - Emilse, Ledesma Achem Miryam AU - Emilse LAM AD - Instituto de Bioquimica Aplicada, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. FAU - Cecilia, Haro AU - Cecilia H AD - Instituto de Bioquimica Aplicada, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. FAU - Maria, Teran Magdalena AU - Maria TM AD - Instituto de Bioquimica Aplicada, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. FAU - Eugenia, Monaco Maria AU - Eugenia MM AD - Instituto de Biologia, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. FAU - Alicia, Isse Blanca AU - Alicia IB AD - Instituto de Bioquimica Aplicada, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. FAU - Lazarte, Sandra Stella AU - Lazarte SS AD - Instituto de Bioquimica Aplicada, Facultad de Bioquimica, Quimica y Farmacia, Universidad Nacional de Tucuman, Tucuman, Argentina. LA - eng PT - Journal Article DEP - 20180327 PL - Switzerland TA - Blood Res JT - Blood research JID - 101605247 PMC - PMC5898988 OTO - NOTNLM OT - Cryohemolysis OT - Erythrocyte osmotic fragility OT - Hematimetric indexes OT - Hereditary spherocytosis COIS- Authors' Disclosures of Potential Conflicts of Interest: No potential conflicts of interest relevant to this article were reported. EDAT- 2018/04/18 06:00 MHDA- 2018/04/18 06:01 PMCR- 2018/03/01 CRDT- 2018/04/18 06:00 PHST- 2017/06/13 00:00 [received] PHST- 2017/07/20 00:00 [revised] PHST- 2017/08/30 00:00 [accepted] PHST- 2018/04/18 06:00 [entrez] PHST- 2018/04/18 06:00 [pubmed] PHST- 2018/04/18 06:01 [medline] PHST- 2018/03/01 00:00 [pmc-release] AID - 10.5045/br.2018.53.1.10 [doi] PST - ppublish SO - Blood Res. 2018 Mar;53(1):10-17. doi: 10.5045/br.2018.53.1.10. Epub 2018 Mar 27.