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- https://med.libretexts.org/Bookshelves/Nursing/Nursing_Pharmacology_(OpenRN)/01%3A_Kinetics_and_Dynamics/1.06%3A_ExcretionRemaining parent drugs and metabolites in the bloodstream are often filtered by the kidney, where a portion undergoes reabsorption back into the bloodstream, and the remainder is excreted in the urine...Remaining parent drugs and metabolites in the bloodstream are often filtered by the kidney, where a portion undergoes reabsorption back into the bloodstream, and the remainder is excreted in the urine. Lab studies used to estimate liver function are called liver function tests and include measurement of the ALT and AST enzymes that the body releases in response to damage or disease.
- https://med.libretexts.org/Bookshelves/Nutrition/Principles_of_Nutritional_Assessment_3e_(Gibson_et_al.)/29%3A_Selenium_(Chapter_25b)/29.07%3A_New_PageThis page explains selenium metabolism, highlighting dietary sources like selenomethionine and selenocysteine. It details how selenocysteine is converted to selenide for incorporation into selenoprote...This page explains selenium metabolism, highlighting dietary sources like selenomethionine and selenocysteine. It details how selenocysteine is converted to selenide for incorporation into selenoproteins, while selenomethionine can replace methionine in proteins. The main excretion route is through urinary metabolites, influenced by selenium intake, with limited enterohepatic circulation resulting in fecal excretion mainly of unabsorbed selenium.
- https://med.libretexts.org/Bookshelves/Nutrition/Principles_of_Nutritional_Assessment_3e_(Gibson_et_al.)/17%3A_Vitamin_C_(Chapater_19)/17.11%3A_Urinary_excretion_of_ascorbic_acid_and_metabolites_(19.11)This page discusses the excretion of ascorbic acid primarily through urine, highlighting that high intakes can increase oxalate levels. Urinary ascorbic acid reflects recent dietary intake but is not ...This page discusses the excretion of ascorbic acid primarily through urine, highlighting that high intakes can increase oxalate levels. Urinary ascorbic acid reflects recent dietary intake but is not a reliable indicator of vitamin C status. A renal threshold of about 60µmol/L requires intakes of at least 100mg/d for saturation. Careful measurement is necessary due to instability, with HPLC recommended as the preferred analysis method.
- https://med.libretexts.org/Bookshelves/Nutrition/Principles_of_Nutritional_Assessment_3e_(Gibson_et_al.)/28%3A_Zinc_(Chapter_24c)/28.05%3A_New_PageThis page discusses urinary zinc excretion, which ranges from 0.3–0.6mg daily and is influenced by dietary intake and supplementation. A systematic review found it to be a reliable biomarker for zinc ...This page discusses urinary zinc excretion, which ranges from 0.3–0.6mg daily and is influenced by dietary intake and supplementation. A systematic review found it to be a reliable biomarker for zinc supplementation in well-nourished adults but indicates decreased excretion only in cases of very low intake. Various clinical and lifestyle factors affect zinc excretion.
- https://med.libretexts.org/Courses/Monterey_Peninsula_College/Nursing_Pharmacology_(OpenRN)/01%3A_Kinetics_and_Dynamics/1.07%3A_ExcretionRemaining parent drugs and metabolites in the bloodstream are often filtered by the kidney, where a portion undergoes reabsorption back into the bloodstream, and the remainder is excreted in the urine...Remaining parent drugs and metabolites in the bloodstream are often filtered by the kidney, where a portion undergoes reabsorption back into the bloodstream, and the remainder is excreted in the urine. Lab studies used to estimate liver function are called liver function tests and include measurement of the ALT and AST enzymes that the body releases in response to damage or disease.
- https://med.libretexts.org/Bookshelves/Pharmacology_and_Neuroscience/Book%3A_Principles_of_Pharmacology_(Rosow_Standaert_and_Strichartz)/01%3A_Chapters/1.03%3A_Pharmacokinetics_IThe page provides a detailed overview of drug absorption, distribution, and elimination, describing the factors influencing these processes for both enteral and parenteral administration. It covers me...The page provides a detailed overview of drug absorption, distribution, and elimination, describing the factors influencing these processes for both enteral and parenteral administration. It covers mechanisms like passive diffusion, active transport, and endocytosis, along with various routes of drug administration including oral, parenteral, pulmonary, and topical. It discusses drug distribution across tissues, plasma protein binding, and apparent volume of distribution.
