Related Experiment Video
Updated: Mar 2, 2026
08:14
In Vitro Biochemical Assays using Biotin Labels to Study Protein-Nucleic Acid Interactions
Published on: July 17, 2019
13.4K
BIOTIN INTERFERENCE WITH ROUTINE CLINICAL IMMUNOASSAYS: UNDERSTAND THE CAUSES AND MITIGATE THE RISKS
Summary
High-dose biotin supplements can interfere with common lab tests, leading to inaccurate results. Healthcare professionals should be aware of biotin interference in immunoassays, especially when results don't match patient symptoms.
Area of Science:
- Clinical Chemistry
- Biochemistry
- Medical Diagnostics
Background:
- Exogenous biotin, particularly from high-dose supplements, is increasingly reported to cause analytical interference.
- This interference affects streptavidin/biotin (SA/B)-based immunoassays, which are widely used in clinical diagnostics.
- Biotin interference impacts various medical fields beyond endocrinology, including anemia, malignancy, autoimmune, infectious diseases, and cardiac damage assessment.
Purpose of the Study:
- To elucidate the mechanisms of biotin interference in SA/B immunoassays.
- To identify automated immunoassay systems susceptible to biotin interference.
- To provide guidance on estimating and mitigating biotin interference risks and review related literature for endocrine function tests.
Main Methods:
- Evaluation of manufacturer's Instructions for Use (IFUs) for seven immunoassay systems.
- Systematic literature search of PubMed/MEDLINE for articles on biotin interference.
- Review of original reports, case series, and scientific meeting abstracts.
Main Results:
- Increased use of high-dose biotin supplements correlates with rising reports of analytical interference.
- Biotin interference affects immunoassays used across internal medicine, not just for endocrine function tests.
- Immunoassay methods with similar designs are vulnerable, posing a widespread diagnostic challenge.
Conclusions:
- Healthcare personnel require increased awareness of immunoassay methods vulnerable to biotin interference.
- Biotin supplements should be considered a potential cause of falsely abnormal lab results.
- Investigate biotin supplements as a source of interference when lab results conflict with clinical presentation.
More Related Videos
13:57Bio-layer Interferometry for Measuring Kinetics of Protein-protein Interactions and Allosteric Ligand Effects
Published on: February 18, 2014
30.4K
06:50A High-Throughput Electrochemiluminescence 7-Plex Assay Simultaneously Screening for Type 1 Diabetes and Multiple Autoimmune Diseases
Published on: May 29, 2020
3.1K
Related Concept Videos
01:29Therapeutic Drug Monitoring: Affecting Factors
289
Therapeutic Drug Monitoring (TDM) is the clinical practice of measuring specific drug levels in a patient's blood or body tissues to manage and optimize therapy. TDM is crucial for drugs with narrow therapeutic windows, like warfarin and phenytoin, where incorrect doses can lead to treatment failure or severe side effects. This monitoring ensures the dosage administered is within a safe and effective range. The factors affecting therapeutic drug monitoring include:Patient-Specific Factors:a.
289
01:25Pharmacokinetics: Drug–Drug Interactions
544
Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
544
01:30Drug toxicity: Drug–Drug Interaction
116
Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
116
01:28Drug Products: Biologics, Biosimilars and Interchangeables
312
Body:Biologics, derived from living sources such as humans, animals, or microorganisms, represent a significant category of pharmaceuticals. These complex molecules, developed through advanced biotechnological methods or purified from natural sources, include essential medical treatments like insulin and growth hormones. The complexity of biologics arises from their large molecular structures and the intricate processes required for their production, making them distinct from conventional...
312
01:13Bioequivalence studies: Biowaivers
337
Body:In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...
337
01:08Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment
316
Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
316