T4, Free, Direct Dialysis
Order Name
T4 FREE DD
Test Number: 3653475
Revision Date 12/12/2022
Test Number: 3653475
Revision Date 12/12/2022
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
T4, Free, Direct Dialysis
|
High-pressure liquid chromatography (HPLC) tandem mass spectrometry. | 6892-4 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1 mL (0.5) | Serum | Clot Activator (SST or Red No-Gel) | Frozen |
| Alternate 1 | 1 mL (0.5) | Plasma | EDTA (Lavender Top) | Frozen |
| Instructions | Notes: 0.5 mL; Pediatric Volume: 0.4 mL (Note: This volume Does NOT allow for repeat testing). Specimen Type: Red-top tube, gel-barrier tube, OR lavender-top (EDTA) tube Specimen Storage: FREEZE Specimen Collection: Serum or plasma must be separated from cells within 45 minutes of venipuncture then transfer into a plastic transport tube and Frozen. To avoid delays in turnaround time when requesting multiple test on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED. Special Instructions: Testing is performed at Esoterix Endocrinology Laboratory: ES#500329 Specimen Stability: Ambient: 2 days, Refrigerated : 5 days, Frozen: 453 days |
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| GENERAL INFORMATION | |
|---|---|
| Expected TAT | 6 - 11 days |
| Performing Labcorp Test Code | 501902 |
| Notes | Labcorp Test Code: 501902 |
| CPT Code(s) | 84439 |
| Lab Section | Reference Lab |