Free T4 for Graves Disease
The free t4 is among the laboratory tests healthcare providers may use to investigate Graves Disease. Learn what it measures, how to prepare, and what results can tell a provider. Educational content only - not a diagnosis.
Order a Free T4 Test
Lab testing is available through our partner network. Order online and visit a local collection site. No doctor's order or insurance required.
- Sample type
- Blood
- Typical turnaround
- 1-2 business days
- Preparation
- No special preparation required.
Why the free t4 may be ordered for Graves Disease
Measures the active form of thyroxine to help evaluate thyroid function.
When evaluating Graves Disease, a healthcare provider may order the free t4 alongside other tests based on your symptoms, history, and physical exam. Test selection and result interpretation are clinical decisions made by a qualified professional.
Symptoms associated with Graves Disease
Anxiety
Intense feelings of nervousness, tension, or panic often arise in response to interpersonal stresses. There is...
Bulging Eyes
Protrusion of the eyes, most commonly associated with Graves disease and thyroid eye disease....
Goiter
An enlargement of the thyroid gland....
Heat intolerance
The inability to maintain a comfortable body temperature in warm or hot weather....
Palpitations
A sensation that the heart is pounding or racing, which is a non-specific sign but may be a manifestation of a...
Tremor
An unintentional, oscillating to-and-fro muscle movement about a joint axis....
Weight loss
Reduction of total body weight....
Other tests used to investigate Graves Disease
Cbc, Cmp, Ua, Thyroid, & Lipid Health Tests
Our standard health test panel includes thyroid testing, a CBC, CMP, Urinalysis, & Lipid Panel. These lab test...
Free T3
Measures triiodothyronine, a thyroid hormone involved in metabolism....
Reverse T3 Test
The Reverse T3 (rT3) blood test is used to help determine if an individual has "nonthyroidal illness synd...
Thyroid Panel
Comprehensive thyroid testing including TSH, free T4, and free T3....
Thyroid Peroxidase Antibodies (TPO)
Detects antibodies associated with autoimmune thyroid disease....
Thyroid Stimulating Hormone (TSH)
Screens for thyroid disorders such as hypothyroidism and hyperthyroidism....
Thyroid Test Panel With Tsh
The best way to test thyroid function is to measure TSH, T3 uptake, T4 and T7. These tests help determine if y...
Thyroid Tests
Fast, easy and affordable thyroid health lab tests-- no insurance or a doctor's referral needed. Simply order ...
Frequently Asked Questions
Is the free t4 used to investigate Graves Disease?
Yes - the free t4 is among the tests healthcare providers may consider when evaluating Graves Disease. Measures the active form of thyroxine to help evaluate thyroid function. Test selection is a clinical decision made by a qualified professional.
How should I prepare for the free t4?
No special preparation required.
How long does the free t4 take?
Results for the free t4 are typically available within 1-2 business days depending on the laboratory.
Does this website interpret my free t4 result?
No. SymptomDatabase.com does not interpret laboratory results. Discuss all results with a qualified healthcare provider.