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HelpTest Code FT4 T4, Free
Specimen Type
Blood
Preferred Collection Container
GRN-PSTCollection Instructions
Routine venipuncture
Collection Volume
5 mL
Minimum Collection Volume
1 mL
Testing Volume
0.5 mL (500 ul)
Rejection Criteria
Inadequate labeling, improper collection.
Specimen Storage and Stability
Stable up to 48 hours at 2-8 C
Day(s) and Time(s) Performed
Monday through Sunday, 24 hours
Alias
Thyroxine, Free; T4, Free, Serum
Ordering Info
Significant interference from biotin can be observed with this assay. It is recommended that patients refrain from taking any supplements containing biotin for 24 hours before having this test drawn.EPIC Code
LAB127
Acceptable Collection Container
GRN-PST, SST, R-NoGel, G-NoGel
Turn Around Time
8 hours
Lab Department
Chemistry