80225:THYROID PANEL (T7)
Author PeaceHealth Laboratories
Modified by
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Methodology: |
Electrochemiluminescent Immunoassay (ECLIA) |
Edit Date: |
11/20/2009 |
Components: |
Thyroid Panel (T7) / T3 Uptake / Thyroxine |
Performed: |
Daily |
Released: |
24-48 hours after setup at PeaceHealth Laboratories’ reference lab. |
CPT Code: |
84436-90 / 84479-90 |
Specimen Collection Details |
Collection: |
Note: Order only by specific request for T7. Collect one 7.5 mL serum separator tube (SST). |
Handling: |
Allow to clot, centrifuge and immediately separate serum from cells into a plastic vial. |
Stability: |
24 hours ambient, 7 days refrigerated, or 30 days frozen. |
Standard Volume: |
1 mL serum. |
Minimum Volume: |
0.5 mL serum. |
Transport: |
Refrigerated. |
Comments: |
Thyroxine (TF4), Free (40050) has emerged as a more commonly ordered replacement for this panel over the past decade. |
Rejection Criteria: |
Grossly hemolyzed specimen. |
|
Components |
Age |
Interval |
Thyroid Panel T7 |
|
FTI 1.7-4.2 |
T3 Uptake |
|
28-41% uptake |
Thyroxine |
Cord blood |
6.6-17.50 µg/dL |
|
0-3 days |
5.37-22.40 µg/dL |
|
4-30 days |
5.24-23.20 µg/dL |
|
1 -23 months |
5.37-16.00 µg/dL |
|
2-6 years |
5.26-14.80 µg/dL |
|
7-11 years |
5.70-14.10 µg/dL |
|
12-19 years |
4.74-14.60 µg/dL |
|
20 years and older |
5.10-14.10 µg/dL |
|
FTI=Free Thyroxine Index |
|
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