Stanford Hospital & Clinics and Lucile Packard Children’s Hospital
RESULT
Test Name : Thyroxine, Free, Plasma/Serum Order Code : FT4
Synonyms: T4 Free; FT4
Specimen Type: Plasma/Serum
Container Type: Mint-top gel tube (lithium heparin) or SST Gold-top gel tube
Required Volume: 1 mL whole blood
Minimum Volume (Pediatric): 0.6 mL (1 full microtainer tube) whole blood
Methodology: Electrochemiluminescence Immunoassay
Standard Run Times: 24 hours/7 days a week
Turnaround Time: 24 hours/next day
Special Handling: Specimens must be centrifuged within 2 hours of collection. After centrifugation, specimens are stable for 7 days at 2 to 8°C.
CPT Codes: 84439
LPCH EPIC Code: LAB127
SHC EPIC Code: LABFT4
Department: Chemistry