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Related Concept Videos

Urine Studies I: Urinalysis01:29

Urine Studies I: Urinalysis

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Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
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Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

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A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
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Urine: Physical and Chemical Properties01:18

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Urine comprises approximately 95% water and 5% solutes. The primary ingredient, apart from water, is urea - a byproduct of the breakdown of amino acids. Other notable components include uric acid, a residue from nucleic acid metabolism, and creatinine, a metabolite from creatine phosphate breakdown in skeletal muscle tissue.
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Serum Laboratory Studies, Stool Test, Breath Test01:30

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Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
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Drug Concentrations: Measurements01:23

Drug Concentrations: Measurements

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Drug concentration is the quantity of a drug present in a biological sample. Measuring drug amounts in biological samples allows the clinician to understand how a drug is absorbed, distributed, metabolized, and excreted. Samples can be obtained through invasive or non-invasive methods. Invasive techniques involve surgical or parenteral interventions to gather blood, cerebrospinal fluid, or tissue biopsy. Conversely, non-invasive approaches provide samples like urine, feces, and saliva.
Plasma...
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Drug Excretion: Miscellaneous Routes01:10

Drug Excretion: Miscellaneous Routes

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Drug excretion involves various organs, including the liver, intestines, skin, and eyes. In the case of drugs or toxins, they can be actively secreted into bile by transporters in the hepatocyte's canalicular membrane. These substances enter the GI tract during digestion and may be reabsorbed into the body from the intestine. This process, known as enterohepatic recycling, can significantly prolong the presence and effects of a substance in the body. To interrupt this cycle, specific...
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High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
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Objective Testing: Urine and Other Drug Tests.

Scott E Hadland1, Sharon Levy2

  • 1Division of Adolescent/Young Adult Medicine, Department of Medicine, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA.

Child and Adolescent Psychiatric Clinics of North America
|June 25, 2016
PubMed
Summary
This summary is machine-generated.

Careful drug testing aids clinical care and substance use treatment. Clinicians must interview adolescents and validate test results to ensure accuracy and avoid misleading outcomes.

Keywords:
AdolescentsEthanolStreet drugsSubstance abuse detectionSubstance-related disordersUrine

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Area of Science:

  • Clinical toxicology
  • Adolescent medicine
  • Substance use disorder treatment

Background:

  • Drug testing is a valuable tool in clinical settings.
  • Accurate interpretation requires clinical context.
  • Adolescent substance use necessitates reliable testing methods.

Purpose of the Study:

  • To emphasize the importance of careful drug testing in adolescent care.
  • To guide clinicians on interpreting drug test results effectively.
  • To highlight the need for robust sample collection and validation protocols.

Main Methods:

  • Clinical interview with adolescent patients.
  • Interpretation of drug testing results within a clinical context.
  • Review of sample collection and validation procedures.

Main Results:

  • Drug test results can be misleading without proper clinical context.
  • Clinician interviews help predict and interpret test outcomes.
  • Sample tampering is a concern requiring attention to collection protocols.

Conclusions:

  • Drug testing is a critical adjunct when collected and interpreted thoughtfully.
  • Clinicians must integrate patient interviews with test results for accuracy.
  • Ensuring sample integrity through rigorous protocols is essential for reliable drug testing.