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Biotinidase

Source Blood
Mnemonic MDLBL

MDL Test Name Prompt: Biotinidase
Specimen Requirements 2 x 4 mL red top  tubes (NOT SST) preferred.  2 x 4 mL dark green top sodium heparin tubes (NOT PST) are also acceptable.
Specimen Handling PSC:
Centrifuge, transfer serum or plasma to aliquot tube, write "Red Top" or "Heparin" on the aliquot tube, and transport on ice to DSC.

RRL:
Centrifuge, transfer  serum to aliquot tube, write "Red Top" or "Heparin" on the aliquot tube, and transport on ice to ACH.

Extra-regional:
Centrifuge, transfer serum to aliquot tube, write "Red Top" or "Heparin" on the aliquot tube, and freeze prior to transport to DSC.
Additional Information Screening of newborns done as part of Newborn Metabolic Screen.

Send a copy of the requisition with the specimen.
Testing Location ACH Molecular Diagnostic Lab
Testing Frequency Monthly
Alternate Name(s) BTD
Reference Interval Provided on test report.