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Free T4
MessageSRHC Clients
Outreach/Outpatients: 1 lime green tube
Inpatients: 1 lime green tube
Transport room temp <2 hours if cells and serum are not separated.
Transport refrigerated <8 hours if cells and serum are separated.
Outreach/Outpatients: 1 lime green tube
Inpatients: 1 lime green tube
Transport room temp <2 hours if cells and serum are not separated.
Transport refrigerated <8 hours if cells and serum are separated.
Test Code
FT4L
Alias/See Also
Free Thyroxine
CPT Codes
84439
Other Acceptable Specimens
1 lime green top tube, 1 yellow top tube or 1 red top tube
Transport Container
1 lime green tube,1 yellow tube or 1 red tube
Specimen Stability
Room Temp: 8 hours
Refrigerated: 48 hours
Methodology
Chemilumi- nescence
Setup Schedule
24/7
Report Available
4-12 hrs
Reference Range
See patient report
