title: Mismeasurement of methemoglobin ("methemoglobin revisited")
mesh_terms: D001793:Blood Preservation; D005189:False Positive Reactions; D005615:Freezing; D006801:Humans; D008708:Methemoglobinemia / Q000097:blood*; D008751:Methylene Blue / Q000097:blood; D013053:Spectrophotometry; D013436:Sulfhemoglobinemia / Q000097:blood*
chemical_list: D008751:Methylene Blue