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EPIC CODE: LAB127 Thyroxine, Free

ADDITIONAL TEST CODE

Sunquest: T4FRER

REGIONAL HOSPITAL PERFORMING

UPH Methodist Hospital
UPH Pekin Hospital
UPH Proctor Hospital

Collect

Gold (SST), Plain Red or Green (Lithium Heparin) Vacutainer Tube.

Preferred volume: 6mL Minimum required volume: 0.5mL serum/plasma

Storage/Transport Temperature

Ambient (room temperature) or 2-8 C.
Separate serum or plasma from cells ASAP or within 2 hours of collection.

Stability (from collection to initiation)

After separation from cells:
Refrigerated (2-8oC) Stability: 14 days
Frozen (-20oC) Stability: 3 months

Remarks

Separate serum from cells immediately after collection<br The chance of interference is remote but can potentially alter resuts by 10%. If patient is on Biotin supplementation, be aware of any abnormal rsults and have patient discontinue supplementation prior to drawing labortory testing.

Days Performed

Sunday – Saturday

Methodology

Chemiluminescent Immunoassay

Reference Interval

0-23 months:

2-12 years:

13-20 years:

21-999 years:

  METHODIST PEKIN PROCTOR
0 – 23 months 0.88-1.48 ng/dL 0.88-1.48 ng/dL 0.93 – 1.45






 
0.88-1.48 ng/dL 0.93 – 1.45

0.93 – 1.45
2 – 12 years 0.81-1.35 ng/dL 0.82 – 1.40 0.82 – 1.40
13 – 20 years 0.78-1.33 ng/dL 0.78 – 1.34 0.78 – 1.34
21 – 999 years 0.80-1.50 ng/dL 0.76 – 1.46 0.76 – 1.46

CPT Codes

84439