|Age:||18 years of age and older|
|Keywords:||biotin, TSH, Thyroid Stimulating Hormone|
At the time of sample collection: • You will interact with your bedside nurse and a member of the research team. • Blood will be drawn as it would for your routine care. • Samples will come from existing lines already placed for your care, no new lines will be placed. • The sample will be tested on the Beckman DxI Immunoanalyzer as part of routine care. • Remnant or additional sample (about one teaspoon) will be further tested on 2 other instuments; electrochemiluminescent TSH assay (Roche Diagnostics, Indianapolis, IN) and Abbott (Architect i1000) assays. • The sample tested for biotin via mass spectrometry. • All sample collection and testing will be performed at the UC Davis Medical Center Clinical Laboratory. After sample collection, no follow-up is necessary. The total time is 5 minutes and is one time only.