title: A dark-brown serum sample.
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
authors.forename: Maria A V
authors.initials: MA
authors.lastname: Willrich
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
authors.forename: Craig A
authors.initials: CA
authors.lastname: Wittwer
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
authors.forename: Nikola A
authors.initials: NA
authors.lastname: Baumann
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN. block.darci@mayo.edu.
authors.forename: Darci R
authors.initials: DR
authors.lastname: Block
mesh_terms: D000368:Aged; D001769:Blood; D001774:Blood Chemical Analysis / Q000379:methods*; D003116:Color; D005260:Female; D006333:Heart Failure / Q000097:blood*; D006801:Humans; D006949:Hyperlipidemias / Q000097:blood* / Q000503:physiopathology