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<div data-message-author-role="assistant" data-message-id="6623fbfd-20a6-43f8-826d-49864c4bd225" dir="auto" id="isPasted">What is free T3? Free T3 (triiodothyronine) is the active form of thyroid hormone, crucial for regulating metabolism, heart function, digestion, muscle control, brain development, and bone maintenance. Unlike bound T3, free T3 can readily act on tissues.Why is free T3 important? Free T3 reflects thyroid health and abnormal levels can indicate thyroid disorders. High free T3 suggests hyperthyroidism, while low levels suggest hypothyroidism. SiPhox Health includes free T3 in its Thyroid+ panel to help assess thyroid function.Understanding free T3 levels:<ul><li style="font-size: 16px;">Low: &lt; 1.9 pg/mL</li><li style="font-size: 16px;">Optimal: 3.2 &#x2013; 3.9 pg/mL</li><li style="font-size: 16px;">Normal: 1.9 &#x2013; 4.4 pg/mL</li><li style="font-size: 16px;">High: &gt; 4.4 pg/mL</li></ul>T3 levels peak in the early morning and drop by afternoon, so morning testing may better detect hypothyroidism.Maintaining optimal free T3 levels:<ul><li style="font-size: 16px;">Diet: Reduce iodine and eat more cruciferous vegetables to lower high T3; increase calories and carbs if T3 is low.</li><li style="font-size: 16px;">Lifestyle: Manage inflammation, reduce stress, and improve sleep to support T3 levels.</li></ul>DISCLAIMER:If you are concerned about free T3 levels always consult your physician. </div>

What is free T3?Free T3 (triiodothyronine) is the active form of thyroid hormone, crucial for regulating metabolism, heart function, digestion, muscle control, brain development, and bone maintenance. Unlike bound T3, free T3 can readily act on tissu

Free T3

Biomarkers

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About SiPhox Health

ApoA1

ApoB

ApoB:ApoA1 ratio

Estradiol

Cortisol

DHEA-S

Fasting Insulin

Ferritin

Follicle-Stimulating Hormone (FSH)

HDL-C

Hemoglobin A1C (HbA1c)

hs-CRP

Homocysteine

Inflammation (hs-CRP)

LDL-C

Testosterone

Testosterone:Cortisol Ratio

Total Cholesterol

Total cholesterol:HDL ratio

Tryglycerides

Trygliceride:HDL-C ratio

Vitamin D

Alanine Aminotransferase (ALT)

Creatinine

eGFR

Fasting Glucose

HOMA-IR

Lipoprotein (a)

Thyroid stimulating hormone (TSH)

Albumin

Anti-Mullerian hormone (AMH)

Folate

Luteinizing hormone (LH)

Prolactin (PRL)

Prostate-specific antigen (PSA)

Sex Hormone-Binding Globulin (SHBG)

Vitamin B12

Free T4

Thyroid Peroxidase Antibody (TPOAb)

Aspartate Aminotransferase (AST)

Blood Urea Nitrogen (BUN)

Bilirubin

Progesterone

DNA Methylation

Cadmium

Copper

Magnesium

Mercury

Selenium

Zinc

What panels do you offer and what biomarkers are included in each?

How can I get a CGM replacement?

How Can I Order a CGM?

Sharing your Kits

Partnerships

The Processing and Verification of Samples

Heart and Metabolic Program Comprehensive Guide

DNA Methylation Comprehensive Guide

What should I do if I experience delays with my sample shipment?

Can I add a specific test to my kit, like a thyroid panel?

Adding 3rd Party Results to Your SiPhox Account

How do I register a kit?

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What are add-ons?

Should I take a test if I have COVID or another acute illness?

EasyDraw: The Effortless Way to Collect Your Sample

Mini Panels: Flexible, Low-Cost Testing Options

The Ultimate Program: Comprehensive Health Testing Over 6 Months

SiPhox Health Portal Shop: Easy Access to All Our Products

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Where is my test kit? I want to track my sample.

Kits, Panels, & Samples

Can I pay for SiPhox Health using funds from my Health Savings Account or Flexible Spending Account (HSA/FSA)?

I have an Unlimited membership and don’t know why I was just charged

I am having trouble logging into my account

Membership cancelation

Changing my shipping address

Update Name/Correct Name

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Do you offer a military or veteran discount?

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Account and Billing

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How are insights created and added to my reports?

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Comparing Results vs 3rd Parties

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How are Axis Scores calculated?

What is the difference between optimal and reference ranges?’

I believe I am missing wearable data within my SiPhox Health Report. How can I get this resolved?

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How to Refer a Friend and Earn Rewards

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Results, Data, & Insights

What are the necessary steps to prepare for my blood collection?

Do I need to fast before I take my test?

How do you use the lancets? What makes them different from one another? Which lancet should I use?

What happens if my sample collection is unsuccessful?

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How can I reschedule my appointment?

Collection Success

Free T3Updated 3 months ago