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Bolded Tests are Performed at a CNE laboratory

 

Clinical  Lab Updates/Memos

 

GENERAL INFORMATION

COLLECTION INSTRUCTIONS

COLLECTION CONTAINERS

ALGORITHMS

                

Mayo Clinic Laboratories

Orderable Name RT3 T3 (Triiodothyronine), Reverse, Serum

Additional Codes

CNE Order Code: T3 Reverse

Useful For

Aiding in the diagnosis of the sick euthyroid syndrome

Specimen Type

Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.8 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reference Values

10-24 ng/dL

Day(s) Performed

Monday through Friday

CPT Code Information

84482

Report Available

2 to 6 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Portions of this test are covered by patents held by Quest Diagnostics.

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-General Request (T239)

-Renal Diagnostics Test Request (T830)