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t4, free
Synonyms: Free Thyroxine; Free T4; Thyroxine 
Computer Code: FT4
Specimen Collection: 3 mL blood (red, gold and light green (Li heparin) top tube). 
Minimum Volume: 1 mL 
Handling Instructions for Offsite Areas: If red or gold top, allow to clot, centrifuge for 20 minutes, refrigerate. Serum must be removed from red top tube. Min 0.5 mL serum/plasma. 
Reference Values: Greater than 1 year old: 0.60-1.30NG/DL. Less than 1 year old: No range established for this age population. Contact the Lab Director at x23501 for consultation.  
Lab Code: CC 
Requisition: SPEC C
Test Frequency: Daily 
Routine TAT: 24 hr 
Stat TAT: 2 hr 
CPT Code(s): 84439 
LCD or NCD: (NCD) http://www.cms.hhs.gov/mcd/index_section.asp?ncd_sections=40 
Methodology Used: 77
See Addendum XVII

Albany Medical Center
43 New Scotland Avenue
Albany, NY, 12208
Date: 11/26/2014
Time: 13:44:33 (24hr)