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T3, Total
Access Labcorp Draw · Access Medical Labs · Quest Diagnostics3 test optionsFrom $10.50
T3, Total
Access Labcorp Draw · Access Medical Labs · Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsT3 Total – This test measures the total level of T3 hormone in the blood, which is crucial for diagnosing and monitoring the treatment of hyperthyroidism. It also plays a key role in identifying T3 toxicosis, a condition where there's too much thyroid hormone.
What patients is this test right for?This test is particularly important for individuals who may be experiencing symptoms of hyperthyroidism or for those who are being treated for thyroid-related disorders.
Hyperthyroidism Symptoms:• Weight loss
• Rapid heartbeat
• Nervousness or irritability
• Sweating more than usual
• Increased hunger
• Trouble sleeping
What type of sample is required for this test?1 mL serum. A simple blood draw is needed.
Additional test information
This test measures the total level of T3 hormone in the blood, which is crucial for diagnosing and monitoring the treatment of hyperthyroidism. It also plays a key role in identifying T3 toxicosis, a condition where there's too much thyroid hormone.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsT3 Total - This test measures the total level of T3 hormone in the blood, which is crucial for diagnosing and monitoring the treatment of hyperthyroidism. It also plays a key role in identifying T3 toxicosis, a condition where there's too much thyroid hormone.
What patients is this test right for?This test is particularly important for individuals who may be experiencing symptoms of hyperthyroidism or for those who are being treated for thyroid-related disorders.
Hyperthyroidism Symptoms:• Weight loss
• Rapid heartbeat
• Nervousness or irritability
• Sweating more than usual
• Increased hunger
• Trouble sleeping
What type of sample is required for this test?1 mL serum. A simple blood draw is needed.
Additional details
This test measures the total level of T3 hormone in the blood, which is crucial for diagnosing and monitoring the treatment of hyperthyroidism. It also plays a key role in identifying T3 toxicosis, a condition where there's too much thyroid hormone.
Highlighted health areas
- Hormones
- Thyroid
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- T3, Total