Endocrine Community

Get answers. Share advice. Learn More

Thyroid Function Tests

Normal Laboratory Values

Test	Abbreviation	Typical Ranges
Serum thyroxine	T4	4.6-12 ug/dl
Free thyroxine fraction	FT4F	0.03-0.005%
Free Thyroxine	FT4	0.7-1.9 ng/dl
Thyroid hormone binding ratio	THBR	0.9-1.1
Free Thyroxine index	FT4I	4-11
Serum Triiodothyronine	T3	80-180 ng/dl
Free Triiodothyronine l	FT3	230-619 pg/d
Free T3 Index	FT3I	80-180
Radioactive iodine uptake	RAIU	10-30%
Serum thyrotropin	TSH	0.5-6 uU/ml
Thyroxine-binding globulin	TBG	12-20 ug/dl T4 +1.8 ugm
TRH stimulation test Peak	TSH	9-30 uIU/ml at 20-30 min
Serum thyroglobulin l	Tg	0-30 ng/m
Thyroid microsomal antibody titer	TMAb	Varies with method
Thyroglobulin antibody titer	TgAb	Varies with method

Updated on: 10/13/10

Patient Guides

Diabetes Guide for Older People

The risk for diabetes increases with age, making diabetes common in older adults. In fact, approximately 25% of adults over the age of 60 years have diabetes. Learn how you can live better.

Patient Guide to Diabetic Neuropathy

Several types of neuropathy (nerve damage) are caused by diabetes. Learn about these diabetic neuropathies: peripheral, autonomic, proximal, and focal neuropathies. Explains what nerves are affected in each type of diabetic neuropathy.

Patient Guide to Treating High Cholesterol and Diabetes

Diabetic hyperlipidemia sounds a bit intimidating, doesn’t it? As we always do here on EndocrineWeb, we’re going to break down that concept for you, and that’s why we’ve put together this Patient Guide to Treating High Cholesterol and Diabetes.

Patient Guide to Insulin

The purpose of the Patient Guide to Insulin is to educate patients, parents, and caregivers about insulin treatment of diabetes. By reviewing this information, you’re taking an important step to learn about diabetes and how insulin controls the disease to help you live a healthier life.

Patient Guide to Osteoporosis Prevention

If you are like many people, you may think that osteoporosis—a condition marked by low bone mineral density, which leads to lowered bone strength and a heightened risk of fractures—is something you will not have to worry about until later in life.

Patient Guide to Easy Diabetic Recipes

Need some new ideas for what to eat? We've put together 5 delicious—and diabetes-friendly—recipes. Breakfast, lunch, dinner—even an afternoon snack and a yummy dessert. This Patients' Guide will help you eat well all day long with our easy diabetic recipes.

Thyroid Cancer Guide

A neck lump or nodule is the most common symptom of thyroid cancer. You may feel a lump, notice one side of your neck appears to be different, or your doctor may find it during a routine examination. If the tumor is large, it may cause neck or facial pain, shortness of breath, difficulty swallowing, cough unrelated to a cold, hoarseness or voice change.

Patient Guide to Managing Your Child's Type 1 Diabetes

This Patient Guide is designed especially for parents of children with type 1 diabetes. Here, you'll learn about some of the most important aspects of managing your child's condition.

Thyroid Function Tests

Normal Laboratory Values

Thyroid Gland Basics

Thyroid Disorders

Thyroid Resources