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27-November-2012
New from Cerilliant - Certified Spiking Solutions® of the thyroid hormone internal standards, L-Thyroxine-13C6 (T4-13C6) and 3,3',5'-Triiodo-L-thyronine-13C6 (reverse T3-13C6).


L-Thyroxine-13C6 (T4-13C6), T-076
100 ug/mL in 0.1 N NH3 in Methanol

Thyroxine or T4 is a thyroid hormone responsible for regulation of protein, fat, and carbohydrate metabolism as well as the proper development and differentiation of all cells of the human body. This internal standard and Certified Spiking Solution® is suitable for quantitation of free and total T4 serum levels by LC-MS/MS for determination of hyper- or hypothyroidism and monitoring treatment with synthetic thyroid hormones.

3,3´,5’-Triiodo-L-thyronine- T-078
100 ug/mL in 0.1 N NH3 in Methanol

Reverse T3 or rT3 is a biologically inactive form of the thyroid hormone T3 and is produced in the body particularly during periods of stress. Under certain conditions such as fibromyalgia, liver disease, and chronic fatigue syndrome (CFS), more rT3 is produced which inhibits the desirable conversion of thyroxine (T4) to T3. This internal standard and Certified Spiking Solution® is suitable for quantitation of reverse T3 serum concentrations by LC-MS/MS to monitor impact of these and other diseases on thyroid hormone levels.



Cerilliant Certified Solution Standards and Certified Spiking Solutions are manufactured to the highest industry standards. We are accredited to ISO Guide 34 and ISO/IEC 17025 & certified to ISO 13485 and ISO 9001. Our quality system also incorporates cGMP and GLP requirements


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