Update on Free T3 Testing

There are a few circumstances that may affect Free T3 (triiodothyronine) test results.  The following two test descriptions from LabCorp, a major nationwide diagnostic laboratory, indicate conditions which may interfere with testing and when the Dialysis and LC/MS-MS may be preferred.  Biotin may interfere with Free T3 and other thyroid tests.  Thyroid antibodies may interfere… Continue reading Update on Free T3 Testing

Basic T3 Startup

The first step to adding T3 to our thyroid hormone replacement regimen following total thyroidectomy (TT) is understanding what T3 is and how it works. The two thyroid hormones are thyroxine (T4) and triiodothyronine (T3). A healthy thyroid produces mostly T4 and smaller amounts of T3.  This production is controlled by a “negative feedback loop”… Continue reading Basic T3 Startup

TSH Suppression

There are two primary dimensions in follow up treatment for thyroid cancer. The first is focused on preventing and identifying recurrence while the second, often overlooked in the quest to "beat cancer" is supporting your Quality of Life (QoL). Some endocrinologists and other providers may not always be aware of the need to keep TSH… Continue reading TSH Suppression

Suppression vs QoL

Why is TSH suppression so often the sole or primary goal in thyroid cancer treatment with little regard for Quality of Life (QoL)? We are told, over and over, that the vast majority of thyroid cancer patients do just fine for the rest of their lives on synthetic thyroid hormone replacement (THR) therapy evaluated by… Continue reading Suppression vs QoL

Thyroid Cancer Test and ICD Codes

Test and ICD Codes - Current as of 15 December, 2021These test and ICD codes can be helpful if your tests are being ordered by a primary care provider or an endocrinologist who does not specialize with thryoid cancer patients. Lab Corphttps://www.labcorp.com/test-menu/search Order CodeOrder Code NameResult CodeResult Code NameUnits224576TSH+Free T44264 19745TSH T4,Free(Direct)uIU/mL ng/dL10389Triiodothyronine (T3), Free10389Triiodothyronine… Continue reading Thyroid Cancer Test and ICD Codes

Quick Thyroid Tour

When T4 and T3 go low, TSH goes high. The hypothalamus senses low circulating levels of thyroid hormone —Triiodothyronine (T3) and Thyroxine (T4) — and responds by releasing thyrotropin-releasing hormone (TRH). TRH - Thyrotropin-releasing hormone is a hormone produced in the hypothalamus that stimulates the release of thyroid-stimulating hormone (TSH) from the anterior pituitary gland.… Continue reading Quick Thyroid Tour

Basic Testing Information

Thyroid Level Testing for Thyroid Cancer Patients This is a basic outline of the thyroid tests most frequently asked about and are needed to properly monitor thyroid hormone replacement (THR) levels for thyroid cancer patients.  TSH - Thyroid Stimulating Hormone: is a hormone produced in the pituitary gland, a small organ located below the brain,… Continue reading Basic Testing Information

New Consensus on Combination Therapy to Treat Hypothyroidism

— From the publisher's press release:New Rochelle, NY, February 18, 2021—Combination therapy with levothyroxine (LT4) and liothyronine (LT3) is widely used to treat hypothyroidism despite clinical trial results not showing a consistent benefit. A new consensus statement, which presents evidence to support the use of LT4/LT3 combinations and to guide future clinical trial development, is… Continue reading New Consensus on Combination Therapy to Treat Hypothyroidism