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Test Code LAB136 Triiodothyronine (T3), Total

Additional Codes

T3

Collection:

Specimen: Blood 

Container: SST or Red Top.

Specimen Volume: 5 mL; Minimum 1 mL

 

Pediatric Collection:

One Gold or Red Top microtainer filled to 600 uL.

Stability:

If testing is delayed more than 24 hours, remove serum/plasma from the cells or gel separator. Once serum is separated from cells, specimen is stable for:

 

Ambient: 8 Hours

Refrigerated (preferred): 1 Week

Frozen: 2 Weeks

Turnaround Time (TAT):

STAT: 2 HOURS

Routine: 4 HOURS

Test Availability:

Daily / 24 Hours / Available STAT

Performing Laboratory Section:

Chemistry / UMC MAIN LABORATORY

Reference Interval:

Age Reference Range
< 4 days No reference range established
4 days - < 1 year 85.00 - 234.00 ng/dL
1 year - < 12 years 113.00 - 189.00 ng/dL
12 years - < 15 years 98.00 - 176.00 ng/dL
15 years - < 17 years 93.00 - 156.00 ng/dL
17 years - < 19 years 90.00 - 168.00 ng/dL
> 19 years 58.00 - 159.00 ng/dL