A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Thyroid Panel
Test Code7020
CPT Codes
84436, 84479
Includes
T3 Uptake,
T4 (Thyroxine) Total
Free T4 Index (T7)
T4 (Thyroxine) Total
Free T4 Index (T7)
Preferred Specimen
1 mL serum collected in a serum separator tube (SST®)
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in a sodium or lithium heparin (green-top) tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
T3 Uptake | 22-35 % |
T4 (Thyroxine), Total
Male (mcg/dL) |
Female (mcg/dL) |
||||
<1 Month | 4.5-17.2 | 4.5-17.2 | |||
1-23 Months | 5.9-13.9 | 5.9-13.9 | |||
2-12 Years | 5.7-11.6 | 5.7-11.6 | |||
13-20 Years | 5.1-10.3 | 5.3-11.7 | |||
>20 Years | 4.9-10.5 | 5.1-11.9 |
Free T4 Index (T7) | 1.4-3.8 |
Clinical Significance
For diagnosis of hypothyroidism and hyperthyroidism.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153