Thyroid Hormones (T3 & T4), Free, Fractionated, Serum/Plasma Test (7662SP)
| Analysis Code |
7662SP |
| Test Name |
Thyroid Hormones (T3 & T4), Free, Fractionated, Serum/Plasma |
| Test Includes |
T3 (Triiodothyronine), Free [LC-MS/MS], T4 (Thyroxine), Free [LC-MS/MS] |
| Compound Synonym(s) |
FT3
FT4 |
| Purpose |
Endocrinology |
| Category |
Thyroid Hormone |
| Method(s) |
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) |
| Specimen Requirements |
1 mL Serum or Plasma |
| Transport Temperature |
Refrigerated |
| Specimen Container |
Green top tube (Sodium Heparin), Red top tube (no additive) |
| Special Handling |
Promptly centrifuge and separate Serum or Plasma into a plastic screw capped vial using approved guidelines. |
| Light Protection Required |
Not Required |
| Stability |
Room Temperature: 1 day(s)
Refrigerated: 7 day(s)
Frozen (-20 °C): 30 day(s)
Room Temperature: Unacceptable due to potential analyte stability and/or bacteria-induced issues. |
| Rejection Criteria |
Received Room Temperature. |
| Day(s) Test Set-up |
[LC-MS/MS] Monday-Friday 5 days |
| Suggested CPT Code |
[LC-MS/MS] 82088 |
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