â¤0.2 mg/dL. Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders.
Ritchie Valens. In an all too brief career, Ritchie Valens was the first Chicano rock and roll star, having his best remembered hit, La Bamba, just one month before his untimely death with Buddy Holly and the Big Bopper on February 3, 1959.
(3) Comments. CLEAR LAKE â To the rest of the world, Ritchie Valens is a rock ânâ roll icon. To his siblings â older brother Bob Morales of Prunedale, Calif., and younger siblings Connie Lemos of Arnolds Park, Irma Norton, Las Vegas, and Mario Ramirez, Watsonville, Calif., he was family.n Friday, his siblings loaned to the Surf Ballroom & Museum personal memorabilia from Ritchie Valens including a wallet their brother carried at the time of his death and a bow tie.