The thyroid gland produces and secretes T4, otherwise known as thyroxine. Proteins bind to T4 and carry it throughout the bloodstream. Once in the tissues, T4 is released from the proteins and is now free to convert into the more active form called T3. For this reason, many doctors believe that measuring free T4 is a more sensitive test for thyroid hormone production.

T3 or triiodothyronine is the active form of the thyroid hormone. T3 acts as a metabolic throttle for fueling all of the daily cellular functions. Free T3 is the unbound portion of T3 that is biologically active.

This panel includes comprehensive testing of the thyroid stimulating hormone (TSH) in addition to free thyroxine (T4) and free triiodothyronine (T3).

This Testosterone Panel Includes 5 Tests:

• Testosterone, Total, LC/MS (most accurate testosterone test for men with high testosterone and women, no upper or lower limit)
• Testosterone, Free. Free testosterone is best calculated based on the LC/MS-derived total testosterone and equilibrium dialysis-derived percent free levels. 
• Testosterone, Bioavailable. Bioavailable testosterone is calculated based on the LC/MS/MS-derived total testosterone,  free testosterone levels, albumin and SHBG.
• Sex Hormone Binding Globulin (SHBG)
• Albumin

Note: Despite SHBG not being listed on the lab requisition form under "Testosterone, Free, Bioavailable, and Total, Males (Adult)," rest assured the results include this critical component, as it's necessary for calculating bioavailable testosterone.

NOTE: This test can only be purchased by men with suspect PSA over 4 mg/dL.  Free PSA will not be provided for PSA under 4 ng/mL.

PSA circulates through the body in two ways; bound to other proteins or by itself. Unbound PSA is called free PSA. A free-PSA test will measure the percentage of unbound PSA while a PSA test is used to measure the total of free and bound PSA in the blood. The free PSA is a defective variant of normal PSA that can no longer bind to other proteins and so circulates in the blood in the free form. Although the reason why this is the case is poorly understood - patients with prostate cancer may have lower free PSA levels than those with a benign prostate condition.

THIS IS THE MOST AFFORDABLE TESTOSTERONE TEST IN THE U.S. The most accurate way to measure total testosterone is with liquid chromatography/mass spectrometry. This panel also shows free testosterone percent by equilibrium dialysis and free testosterone calculated from percent free T. This test is more accurate for low and high testosterone blood levels (for men who expect high testosterone blood levels over 1,500 ng/dL, women, and children who usually have low T levels). It has no interferences with supplements or anabolics. Note: Results may take 5-7 business days. For a faster turnaround, choose this test instead: Testosterone, Free, Bioavailable and Total (With Lower & Upper Limit) plus SHBG

This test measures the free (unbound to SHBG or albumin) estradiol and total sensitive estradiol in blood. The test is performed using liquid chromatography/mass spectrometry (LC/MS). NOTE: This test is a send out test to Quest's Nichols Institute San Juan Capistrano.  Testing schedule is Mon and Wed.  Reports are available within 4-14 days from the time the specimen is received at the send out testing lab. Test results may take up to 16 business days.

This is the most cost effective testosterone test panel that takes the least amount of time to perform and that includes 5 important tests: 1- Total testosterone, 2- Calculated free testosterone, 3- Bioavailable (unbound) testosterone, 4- Sex hormone binding globulin (SHBG), and albumin. Testosterone upper limit under 1,500 ng/dL (ECLIA, immunoassay). It is accurate for most men using or not using TRT . For men expecting very high testosterone blood levels over 1,500 ng/dL or low total T below 250 ng/dL, the LC/MS testosterone test is more appropriate, but it takes a few more days to perform. NOTE: Despite SHBG not being listed on the lab requisition form under "Testosterone, Free, Bioavailable, and Total, Males (Adult)," rest assured the results include this critical component, as it's necessary for calculating bioavailable testosterone.

The reverse T3 test has to be done at the same time you do the free T3, and you then measure the ratio between the two by dividing the RT3 into the Free T3. The body produces the benign RT3 naturally to rid itself of excess of T4, but in some cases, such as high or low cortisol, RT3 is produced in excess, which can clog cell receptors from receiving T3. FT3 is usually twenty or more times higher than RT3. NOTE: Reverse T3 is analyzed using a specific technique called liquid chromatography/tandem mass spectrometry (LC/MS-MS). There's a special place in the U.S. where these precise machines needed for LC/MS panels run only on two specific days a week. So, sometimes the clock ticks a bit while we wait for samples to return from their initial collection points. Results may take 7 business days.

The thyroid stimulating hormone (TSH) is produced and secreted by the pituitary gland and stimulates the thyroid to produce T3 and T4. When TSH is elevated, low thyroid function may be indicated. If TSH is low it is indicative of high thyroid function. A study found that TSH was suppressed in all subjects after food, so fasting may be suggested although it is not reqired by Quest. Free T4 and Free T4 values did not change significantly after eating.

This lab test panel includes main blood test makers involved in hair loss in women and men: Complete Blood Count (CBC)- Can detect potential low hemoglobin and infections that can lead to hair loss. Ferritin- Low ferritin, an iron storage protein, has been linked to hair loss and slow down of hair growth. Iron and Total Iron Capacity (TIBC)- Low iron anemia has been linked to hair loss.  Hyperandrogenism: Excessive male hormones (androgens): Total Testosterone (LC/MS), Free Testosterone (Equilibrium Ultrafiltration), DHEA-S, Dihydrotestosterone (DHT)  Hypothyroidism and Hyperthyroidism: Thyroid Stimulation Hormone (TSH), Free Triidothyronine (Free T3)

Comprehensive and All-Inclusive Lab Test Panel for clients of The Wellness By Design Project.  The panel includes:  Testosterone Free with Total, Estrogens Total, Estrone, Estradiol, DHEA-S, Progesterone, Pregnenolone, Dihydrotestosterone (DHT), FSH/LH, Cortisol, Prolactin, TSH, Free T3, Free T4, Reverse T3, Anti TPO, AntiTG, C-reactive protein (high sensitivity), Homocysteine, Apolipoprotein B, Insulin-like Growth Factor 1 (IGF-1), Insulin, Sex Hormone Binding Globulin (SHBG), Vitamin D 25-hydroxy, Complete Metabolic Panel, Gamma Glutamyl Transferase (GGT), Lipid Profile, Complete Blood Count (CBC), Hemoglobin A1C (HbA1C), Magnesium (serum), Phosphorus (serum), LDH, Uric Acid, Iron Serum, Total Iron Binding Capacity (TIBC), Iron Saturation, Ferritin, and Fibrinogen activity.

This panel is the most inclusive of all offered on the site for men who want a wide picture of their health or who are considering starting testosterone replacement therapy.  It provides a baseline overview of your sex hormones, thyroid gland, adrenal function, metabolic function, cholesterol, prostate, and overall health.  Tests included: 

• CBC
• CMP
• Lipid Panel
• Testosterone
• Total (LC/MS) Estradiol, Ultra Sensitive
• DHEA-s
• TSH
• Free T3
• PSA
• LH
• FSH

Tests included are:

Complete Blood Count with Differential (CBC)
Comprehensive Metabolic Panel (CMP)
Hemoglobin A1c
Cardio IQ Advanced Lipid Panel
Urinalysis, Complete
TSH
Thyroid Free T3
Thyroid Free T4
Reverse T3
TPO Antibodies
Thyroglobulin Antibodies
Homocysteine
Cardio C-Reactive Protein
CPK
Estradiol, Ultra Sensitive
Testosterone Total & Free (LC/MS- No upper limit)
DHEA – S
Prolactin
DHT
IGF-1
Progesterone
Estrone
Total Estrogens
LH + FSH
Anti-Müllerian Hormone (AMH)
Vitamin D (25OHD)
Vitamin B-12
Folate
Ferritin
Iron & TIBC (Total Iron Binding Capacity)

The determination of TPO antibody levels is the most sensitive test for detecting autoimmune thyroid disease (eg, Hashimoto's thyroiditis, idiopathic myxedema, and Graves disease) and detectable concentrations of anti-TPO antibodies are observed in most patients with these disorders. The highest TPO antibody levels are observed in patients suffering from Hashimoto thyroiditis. In this disease, the prevalence of TPO antibodies is about 90% of cases, confirming the autoimmune origin of the disease. These autoantibodies also frequently occur (60%–80%) in the course of Graves disease.

 A prolactin blood test is used by doctors to evaluate sexual dysfunction or very low testosterone blood levels of unknown causes in both men and women.

This test measures levels of drenocorticotropic hormone (ACTH), which is also called adrenocorticotropin and corticotropin, a hormone made in the anterior pituitary gland that tells the adrenal glands to release cortisol, DHEA, and aldosterone. The ACTH plasma test quantifies the blood's level of ACTH. A patient's blood is drawn for the test and then sent to a lab for examination. The test findings enable the diagnosis of ailments such as Addison's disease, Cushing's syndrome, and adrenal tumors

Thyroxine-binding globulin (TBG) is a globulin that binds thyroid hormones in circulation. It is one of three transport proteins (along with transthyretin and serum albumin) responsible for carrying the thyroid hormones thyroxine (T4) and triiodothyronine (T3) in the bloodstream. Of these three proteins, TBG has the highest affinity for T4 and T3 but is present in the lowest concentration. Despite its low concentration, TBG carries the majority of T4 in the blood plasma.

A complete blood count CBC with differential test panel measures several components of your blood including:Red blood cells, which carry oxygen, White blood cells, which fight infection, Hemoglobin, the oxygen-carrying protein in red blood cells, Hematocrit, the proportion of red blood cells to the fluid component in your blood (which correlated with blood thickness), and Platelets, which help with blood clotting. This is also called Complete Blood Count (CBC) with Differential and Platelets Blood Test

Pregnenolone is known as the mother hormone. All other steroids including testosterone and estrogen are derived from this important hormone. For this reason, optimal blood levels of pregnenolone are critical for a healthy hormone balance.  This test uses liquid chromatography/mass spectrometry, the most accurate assay for hormones.

The fasting insulin test is a blood test that measures the level of insulin in your blood after you have fasted (not eaten or drunk anything except water) for at least 8 hours. Insulin is a hormone produced by the pancreas that helps regulate blood sugar levels. The fasting insulin test is often used to help diagnose conditions such as insulin resistance, prediabetes, and type 2 diabetes. It may also be ordered to monitor the effectiveness of treatment for these conditions. The test is usually done in the morning, after an overnight fast. The test results will be reported in units of insulin per liter of blood (U/L). It is important to note that the interpretation of a fasting insulin test may vary depending on the individual's medical history and other factors. A healthcare provider should be consulted to interpret the test results correctly.