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  Thyroxin Specimen Type:
  also known as Thyroxin, Total, T4 , Total T4

Blood


CHEMISTRY

Specimen requirements: Gel Separator Tube 6 mL
  or:Gel Separator Tube 4 mL
Reference ranges:
CATEGORY LOW   HIGH   UNITS   QUALITATIVE  
N/A 4.5 10.9 mcg/dL N/A
Critical values:
CATEGORY LOW   HIGH   UNITS   QUALITATIVE  
N/A <3.0 >20.0 mcg/dL N/A
Unit of measure: mcg/dL
Ideal sample: 5 mL
Absolute minimum amount: 2 mL
Method of collection: N/A
Transportation: N/A
Label instructions: N/A
Request test on form: MULTI LABS [Chem/Hem/UA/Tox/BB/Rheum] ( 151-104 )
Order/entry screen(s): Chemistry - Blood
Stat frequency: N/A
Stat turn around time: N/A
Routine frequency: Weekdays
Must be in by: N/A
Routine turn around time: 1-3 Days
For Hillcrest deliver to: SCRAP : Specimen Central Receiving and
  Processing, room 2-117
For Thornton deliver to: Chemistry : Processing Desk, 1st floor, Hospital,
  room 1-013
Scheduling requirements : N/A
Method: Chemiluminescent Immunoassay
Special Instructions: Methodology change on 3/28/01. Normal range previous to 3/28/01 was 4.5 to 12.9 mcg/dL. Effective 6/11/01 t4 no longer available as a stat order. However, thyroid-stimulating hormone (TSH) is now available as a stat order.
  Results are available on a Chart Copy
  Results are Quantitative
CyberLAB abbreviation: T4
CyberLAB code: 2190
Lab Processing Instructions: N/A