UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

Free T3, Pediatric

Item Value
Approval req'd? Yes, contact Chemistry/Immunology Resident at x3-1438. for patients > 20 years old.
Available Stat? No
Test code PFT3
Test group Thyroid tests
Performed by Quest
Sendout? Yes
Method ICMA
Container type Gold top or Red top
Amount to Collect 2 mL blood
Sample type Serum
Preferred volume 1 mL serum
Min. Volume 0.2 mL serum
Processing notes Freeze serum. Order Quest test #34429X
Units pg/dL
Normal range
< 1 year Not Established
1-9 years 337-506 pg/dL
10-13 years 335-480 pg/dL
14-18 years 287-455 pg/dL
Synonyms Triiodothyronine
Turn around times 4 days.
Additional information This send-out assay is primarily reserved for testing in pediatric patients with suspected or complex endocrine abnormalities. For adult patients see "Free T3, Adult" (test code FT3). It requires approval if ordered in patients over the age of 20.
CPT coding 84481-90
Medical Necessity? Yes. Click here for more information
LOINC code 3051-0
Last Updated 9/18/2012 2:20:58 PM
Entry Number 915
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center