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HelpTest Code T3 T3 (Triiodothyronine), Total Only, Serum or Plasma
Methodology
Electrochemiluminescence Immunoassay (ECLIA)
Specimen Requirements
Container/Tube:
Preferred: Lithium heparin (light green-top)
Acceptable: Serum Gel
Draw blood, spin down and send 0.5 mL (pediatric: 0.2 mL) of plasma or serum.
Reject Due To
|
Hemolysis |
Mild: |
ok |
Gross: |
ok |
|
Lipemia |
Mild: |
ok |
Gross: |
ok |
|
Icterus |
Mild: |
ok |
Gross: |
ok |
Reference Values
|
Age |
ng/mL |
|
0 – 30 days |
0.15 – 2.10 |
|
1 – 11 months |
0.50 – 2.75 |
|
1 – 4 years |
0.80 – 2.58 |
|
5 – 9 years |
0.96 – 2.32 |
|
10 – 14 years |
0.73 – 2.11 |
|
15 – 17 years |
0.69 – 2.01 |
|
> 17 years |
0.80 – 2.0 |
Day(s) Test Set Up
Monday through Sunday
CPT Coding
84480
Performing Laboratory
Huntsville Hospital Laboratory/Madison Hospital Laboratory
Secondary ID
HHA1294
LOINC Coding
| Test Name | LOINC Code |
|---|---|
|
T3 (Triiodothyronine), Total Only, Serum or Plasma |
3053-6 |
Specimen Stability Information
|
Specimen Type |
Temperature |
Time |
|
Plasma,lithium heparin / Serum |
RT, spun |
8 days |
| Refrigerated, spun | 14 days |