• Bloodlettings in Hemochromatosis Result in Increased Blood Lead (Pb) Concentrations 

      Yazdani, Mazyar; Distante, Sonia; Mørkrid, Lars; Ulvik, Rune Johan; Bolann, Bjørn Johan (Journal article; Peer reviewed, 2022)
      Hemochromatosis is a hereditary disorder, most often associated with mutations of the HFE (High FErrum) gene. If left untreated, it can result in severe parenchymal iron accumulation. Bloodletting is the mainstay treatment. ...
    • Breastfed Infants With Spells, Tremor, or Irritability: Rule Out Vitamin B12 Deficiency 

      Ljungblad, Ulf Wike; Astrup, Henriette; Mørkrid, Lars; Hager, Helle Borgstrøm; Lindberg, Morten; Eklund, Erik A.; Monsen, Anne-Lise Bjørke; Rootwelt-Revheim, Terje; Tangeraas, Trine (Journal article; Peer reviewed, 2022)
      Background: In Norway, 5-10% of neonates and infants have biomarkers suggesting vitamin B12 deficiency from newborn screening tests and unselected clinical screening, respectively. Aims: The aims were to identify risk ...
    • The prevalence and clinical relevance of hyperhomocysteinemia suggesting vitamin B12 deficiency in presumed healthy infants 

      Ljungblad, Ulf Wike; Paulsen, Henriette; Mørkrid, Lars; Pettersen, Rolf Dagfinn; Hager, Helle Borgstrøm; Lindberg, Morten; Astrup, Henriette; Eklund, Erik A.; Monsen, Anne-Lise Bjørke; Rootwelt-Revheim, Terje; Tangeraas, Trine (Journal article; Peer reviewed, 2021)
      Background Previous studies have demonstrated a high prevalence of biochemical vitamin B12 deficiency in infants in Norway. Increased total homocysteine (tHcy) is the most important marker of B12 deficiency in infants. ...
    • Renal function, sex and age influence purines and pyrimidines in urine and could lead to diagnostic misinterpretation 

      Salvador, Cathrin Lytomt; Flemmen, Per Tryggve Kjelland; Tøndel, Camilla; Bliksrud, Yngve Thomas; Tsui, Ellen Fun Fong; Brun, Atle; Bjerre, Anna Kristina; Mørkrid, Lars (Journal article; Peer reviewed, 2023)
      Glomerular filtration rate (GFR) is commonly used in clinical practice for the diagnosis and follow-up of chronic kidney disease. Screening for inborn errors of metabolism (IEM) is based on analysis of biomarkers in urine, ...