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Test Code Rev T3 UM T3, Reverse

Clinical System Name

Reverse T3


Reverse T3
T3 Reverse

Sample Requirements

Specimen: Whole Blood

Container(s):Gold SST or Red or Gold Microtainer or Lavender/EDTA or Dark Green/Sodium Heparin

Preferred Vol: 2.0 mL

Minimum Vol: 0.8 mL



Processing Instructions

Reject due to: Unseparated serum (>48 hours on clot) or Serum in Serum Separator Tube not separated from the gel within 24 hours.

Spin: Y


Temp: 2 - 4 C

Storage location: Spin blood, refrigerate 1.0 mL serum  (mimimum 0.3 mL serum) in a plastic tube affixed with a large computer label in the CPA refrigerator send-outs rack.


Off-site collection: Spin, aliquot & refrigerate specimen.


Specimen Type Temperature Time
Serum or plasma Room temp 7 d
  Refrigerated 7 d
  Frozen 30 d



STAT Performed TAT
N Collected daily; set up M- F at Quest 5 - 8 d


Performing Laboratory

Quest Diagnostics



Quest Diagnostics

33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

Phone Number: (800) 553-5445



Reference Range


8 - 25 ng/dL




Method: LC/MS/MS

Analytical Volume: 0.3 mL serum


CPT Codes



Send Out Instructions


Reference Test Name: T3, Reverse
Reference Test Number: 90963
Instructions: Send out with Quest courier M - F. Keep the back copy of the requisition for our records.