This test reflexes to FT3, FT4, and/or TPO as indicated. All possible reflexed tests are based on the results of the reflex algorithm.
Collect
Gold top Serum Separator Tube (SST)
Optimum volume - 6.0 mL
Minimum volume - 2.0 mL
Specimen Preparation
Allow sample to clot for 20 minutes prior to centrifuging
Storage/Transport Temperature
Refrigerated (2-8oC)
Stability (from collection to initiation)
After separation of cells: Ambient - 8 hrs.
Refrigerated - 72 hrs.
Cerner Orderable(s)
TSH Cascade Adult
Performed
TSH and FT4 - performed at all BayCare Hospital Laboratories
FT3 - Performed at Morton Plant Hospital, St. Joseph's Hospital
TPO - Performed at Morton Plant Hospital, St. Joseph's Hospital, St. Anthony's Hospital
Low TSH + High FT4 = Hyperthyroidism
Low TSH + Low FT4 = Secondary Hypothyroidism - severe illness
Low TSH/Normal FT4 + Low FT3 = Secondary Hypothyroidism - severe illness
Low TSH/Normal FT4 + Normal FT3 = Subclinical Hyperthyroidism - severe illness
Low TSH/Normal FT4 + High FT3 = Thyrotoxicosis
High TSH + Low FT4 = Hypothyroidism
High TSH + High FT4 = TSH Secreting Tumor
High TSH/Normal FT4 + Negative TPO = Subclinical Hypothyroidism - severe disease
High TSH/Normal FT4 + Positive TPO = Subclinical Hypothyroidism
Collection
Purpose
This test reflexes to FT3, FT4, and/or TPO as indicated. All possible reflexed tests are based on the results of the reflex algorithm.
Collect
Gold top Serum Separator Tube (SST)
Optimum volume - 6.0 mL
Minimum volume - 2.0 mL
Specimen Preparation
Allow sample to clot for 20 minutes prior to centrifuging
Storage/Transport Temperature
Refrigerated (2-8oC)
Stability (from collection to initiation)
After separation of cells: Ambient - 8 hrs.
Refrigerated - 72 hrs.
Ordering
Cerner Orderable(s)
TSH Cascade Adult
Performed
TSH and FT4 - performed at all BayCare Hospital Laboratories
FT3 - Performed at Morton Plant Hospital, St. Joseph's Hospital
TPO - Performed at Morton Plant Hospital, St. Joseph's Hospital, St. Anthony's Hospital
