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HelpTest Code T4 T4
Additional Codes
Epic EAP: LAB126
Beaker EAP (OALH): LAB10906
Epic Description: T4
Synonym
Thyroxine
Specimen Type
Blood
Specimen Required
| Collection Container | Preferred Volume | Minimum Volume | |
|---|---|---|---|
| Preferred |
Green, Lithium Heparin with Inert Gel |
4.5 mL | 1.0 mL |
| Alternate | Gold, Clot Activator with Inert Gel OR Red, No Anticoagulant, No gel | 4.5 mL | 1.0 mL |
| Preferred Micropuncture | Green Micro, Lithium Heparin with Inert Gel | 4 X 0.5 mL | 3 X 0.5 mL |
| Alternate Micropuncture | Gold Micro, Clot Activator with Inert Gel | 4 X 0.5 mL | 3 X 0.5 mL |
OALH LAB:
| Collection Container | Preferred Volume | Minimum Volume | |
|---|---|---|---|
| Preferred |
Red, no anticoagulant, no gel |
4.0 mL | 1.0 mL |
Instructions for Collection and Transport
Centrifuge specimen. Transport refrigerated on freeze packs. If holding overnight, aliquot plasma or serum and refrigerate. Transport refrigerated on freeze packs.
Home Health Agencies: Keep specimen cool. Deliver to lab within 4 hours.
Aliquot Requirements
Plasma or serum
Optimum 0.3 mL
Minimum 0.15 mL
Performing Lab
Chemistry Lab
Assay Frequency
24 Hours
Routine Turnaround Time
1 day
OALH Lab: 240 min
CSR Storage Requirements
Centrifuge specimen. Transport to Laboratory. If testing will be delayed more than 24 hours, aliquot plasma or serum into a plastic vial and refrigerate.
CPT Code Information
84436