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HelpTest Code LAB3442 Reverse T3
Additional Codes
REV T3
Clinical System Name
Reverse T3
Synonyms
Reverse T3; T3 Reverse; Triiodothyronine Reverse
Sample Requirements
Specimen: Whole Blood
Container(s): Gold SST or Gold Microtainer or Red or Lavender/EDTA or Dark Green/Sodium Heparin
Preferred Vol: 1.0 mL
Minimum Vol: 0.6 mL
Processing Instructions
Reject due to: Serum not separated from the gel separator within 24 hours of collection.
Spin: Y
Aliquot: Y
Temp: -20 C
Storage Location: Separate from cells within two hours of collection. Transfer 0.5 mL (Min: 0.3 mL) to a plastic aliquot tube affixed with large Epic label. Deliver specimen to the CPA -20 freezer, Send Outs rack.
Off-site Collection: Separate from cells within two hours of collection. Transfer 0.5 mL (Min: 0.3 mL) to a plastic aliquot tube affixed with large Epic label. Freeze at -20 C. Transport frozen.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or Plasma | Room Temp | 7 d |
| Refrigerated | 7 d | |
| Frozen | 30 d |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Daily | 6 d |
Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130
Phone Number: (800) 553-5445
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
84482
Methodology
Method: Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Analytical Volume: 0.3 mL Serum or Plasma
Limitations:
Reference Range
8 - 25 ng/dL
Send Out Instructions
| Reference Test Name: | T3 Reverse, LC/MS/MS |
| Reference Lab Test Code: | 90963 |
| Instructions: | Send out Monday through Friday with the Quest courier. |