Order Code: C1372
ABN Requirement: No
Synonyms: T3U; Triiodothyronine Uptake; T-Uptake; Hanolsky Uptake Test
Volume: 1.0 mL
Minimum Volume: 0.5 mL
Container: Gel-barrier tube (SST, Tiger Top)
- Collect and label sample according to standard protocols.
- Gently invert tube 10 times immediately after draw. DO NOT SHAKE.
- Allow blood to clot 30 minutes.
- Centrifuge for 10 minutes.
Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions provided with the Cleveland HeartLab shipping box.
Ambient (15-25°C): 7 days
Refrigerated (2-8°C): 10 days
Frozen (-20°C): 28 days
Deep Frozen (-70°C): 28 days
Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits
Methodology: Immunoassay (IA)
Turn Around Time: 3-4 days
Clinical Significance: The T3 uptake assay is a measure of available thyroid hormone binding sites and should be interpreted with thyroxine levels.
Additional Information: Decreased: Pregnancy, estrogens, hyperproteinemia, acute intermittent porphyria; Increased: Androgens, hyperproteinemia, stress, acute liver disease