2012
DOI: 10.1097/pat.0b013e3283514002
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Biotin interference on TSH and free thyroid hormone measurement

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Cited by 72 publications
(48 citation statements)
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“…Biotin engages in a high affinity noncovalent interaction with the protein streptavidin and has been incorporated as an affinity tag for many in vitro assays (4). Interference of free biotin from patient samples with biotin-based thyroid laboratory assays has been described in infants and young children receiving high dose biotin therapy for suspected inborn metabolic disorders (5,6). Low doses of biotin in vitamin supplements are not thought to produce serum levels high enough to interfere with laboratory assays though some manufacturers such as Roche Diagnostics Inc. mention the potential for interference in anyone taking >5 mg biotin per day (7-9).…”
mentioning
confidence: 99%
“…Biotin engages in a high affinity noncovalent interaction with the protein streptavidin and has been incorporated as an affinity tag for many in vitro assays (4). Interference of free biotin from patient samples with biotin-based thyroid laboratory assays has been described in infants and young children receiving high dose biotin therapy for suspected inborn metabolic disorders (5,6). Low doses of biotin in vitamin supplements are not thought to produce serum levels high enough to interfere with laboratory assays though some manufacturers such as Roche Diagnostics Inc. mention the potential for interference in anyone taking >5 mg biotin per day (7-9).…”
mentioning
confidence: 99%
“…• Meany et al [30] hanno segnalato un caso di un paziente che assumeva 10 mg/die di biotina in cui le basse concentrazioni di PTH misurate con Roche Elecsys 2010 (Monza, Italia) contrastavano con la clinica; rianalizzando il campione con Immulite 2000 (Siemens, Milano, Italia) è stato ottenuto il risultato marcatamente elevato atteso dal quadro clinico (dimostrando, al contempo, che nei pazienti con insufficienza renale l'interferenza dalla biotina può durare fino a 2 settimane); • Waghray A et al [31] hanno confermato la segnalazione qualche anno dopo sulla rivista ufficiale dell'American Association of Clinical Endocrinologists; • Kwok et al [32] hanno studiato nel 2012 il caso di un bambino di 3 anni trattato con 10 mg/die di biotina in cui erano state ripetutamente misurati con Roche Modular E170 basse concentrazioni di TSH e concentrazioni nei limiti di fT4. La ripetizione dei due esami utilizzando Beckman Coulter Access (Cassina de' Pecchi, MI, Italia) aveva presentato un TSH nei limiti e un fT4 aumentato.…”
Section: Il Passatounclassified
“…The recommendations for adequate intake in adults has been estimated to be 30 µg/day [9], with blood concentration ranging from 0.12 to 0.36 nmol/L [10]. This usual dietary intake is not expected to be high enough to affect immunoassays based on the streptavidin-biotin binding [11]. However, patients with inherited metabolic diseases like propionic acidemia, biotinidase deficiency, (and patients with parenteral nutrition) receive higher dosage of biotin, with daily oral doses in case of inherited metabolic diseases ranging from 10 to 40 mg per day [12,13].…”
Section: Biotin Intakementioning
confidence: 99%
“…It is desirable that the laboratories now give a systematic warning concerning biotin interference together with any result of a method involving the streptavidin-biotin interaction. Ideally, it is also wished for health information systems to be able to generate an automatic flag concerning biotin administration to alert the laboratory [11].…”
Section: -Comparison Of Physiologically Dependent Variablesmentioning
confidence: 99%