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Order your own lab tests —
simple & on your schedule Labs

Labcorp

Labcorp tests

Take control of your health without referrals or insurance. Simply order your labs online, receive your requisition form by email, and bring it with you – printed or on your phone – to any LabCorp draw center.

Your blood draw will be performed at LabCorp, and you will not need to pay a separate fee for phlebotomy. Before scheduling your visit, ensure that your LabCorp requisition matches the information on your ID. Once complete, your secure results will be sent directly to your email.

Instructions
Quest Diagnostics

Quest Diagnostics tests

Skip the insurance hurdles and take charge of your wellness journey. Ordering Quest Diagnostics labs is entirely digital: once you purchase, we’ll instantly email a personalized requisition form to show on your phone or print.

With thousands of locations nationwide, finding a Quest Patient Service Center nearby is easy. The phlebotomy fee is already included at checkout, so there are no surprise costs at the front desk. Just bring a valid photo ID that exactly matches the name on your paperwork. After your visit, your confidential results will be securely delivered straight to your email inbox.

Instructions
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Showing 301–312 of 360 results Found 360 results

Labcorp

Sm (Smith) Antibody

 $22.49

Sm (Smith) Antibodies are highly specific autoantibodies used in the diagnosis of systemic lupus erythematosus (SLE). Their presence strongly supports an SLE diagnosis, although they are found in only a subset of patients.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers

Sodium

 $5.99

Sodium is an essential electrolyte that helps regulate fluid balance, nerve function, and muscle contractions. Blood sodium levels are commonly evaluated to detect imbalances such as dehydration, overhydration, or conditions affecting the kidneys, adrenal glands, or heart.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • Sodium An essential electrolyte that regulates fluid balance, blood pressure, and nerve and muscle function.

SS-A (Ro) Abs

 $27.49

SS-A (Ro) Antibodies are autoantibodies linked to autoimmune diseases, particularly Sjögren’s syndrome and systemic lupus erythematosus (SLE). Their presence can also be associated with neonatal lupus and congenital heart block when found in pregnant individuals.

More info
Sample type
Serum
Avg. sample processing time
7 Business days
Require fasting
No
Biomarkers

SS-B (La) Abs

 $27.49

SS-B (La) Antibodies are autoantibodies directed against the La protein, commonly associated with autoimmune conditions. Elevated levels are often found in Sjögren’s syndrome and systemic lupus erythematosus (SLE) and help support the diagnosis of these diseases.

More info
Sample type
Serum
Avg. sample processing time
7 Business days
Require fasting
No
Biomarkers

T3, Free

 $33.49

T3, Free measures the unbound, active form of triiodothyronine in the bloodstream. It is used to evaluate thyroid function, especially in diagnosing hyperthyroidism or assessing the effectiveness of thyroid hormone therapy.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • T3, Free (fT3) The unbound, biologically active portion of triiodothyronine (T3), the more potent thyroid hormone. Used to evaluate thyroid function.

T3, Total

 $18.99

T3, Total measures the total amount of triiodothyronine in the blood, including both bound and unbound forms. It helps assess thyroid function and is particularly useful in evaluating cases of hyperthyroidism.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • T3, Total Measures total triiodothyronine (T3), including both bound and unbound hormone, used in thyroid function evaluation.

T3 Uptake

 $6.49

T3 Uptake is a test that indirectly estimates the number of available binding sites on thyroid-binding proteins, primarily thyroid-binding globulin (TBG). It is used alongside total T4 to calculate the Free Thyroxine Index (FTI), helping to assess thyroid function and differentiate between thyroid and binding protein abnormalities.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • T3 Uptake An older test used, together with total T4, to estimate free thyroid hormone levels by assessing binding protein capacity.

T4, Free

 $13.49

T4, Free measures the unbound, biologically active form of thyroxine in the blood. It is a key indicator of thyroid function and is commonly used to evaluate thyroid disorders, especially when TSH levels are abnormal.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.

T4, Total

 $7.99

T4, Total measures the overall amount of thyroxine in the blood, including both bound and unbound forms. It is used to assess thyroid function and can help diagnose conditions such as hypothyroidism or hyperthyroidism.

More info
Sample type
Serum
Avg. sample processing time
2 Business days
Require fasting
No
Biomarkers
  • T4, Total Measures total thyroxine (T4), including both bound and unbound hormone, used in thyroid function evaluation.

Testosterone, Bioavailable

 $121.49

Testosterone, Bioavailable (Total, Free, Bioavailable, SHBG) offers a full evaluation of testosterone status. It measures total and free testosterone, as well as the portion that is loosely bound to albumin (bioavailable), alongside SHBG, to determine the amount of testosterone readily available for the body to use.

More info
Sample type
Serum
Avg. sample processing time
6 Business days
Require fasting
No
Biomarkers
  • Bioavailable Testosterone The portion of your testosterone that's either free or loosely bound to albumin — the amount actually usable by your body's tissues.
  • Testosterone The primary male sex hormone, also present in women in smaller amounts. Evaluated for low testosterone symptoms, fertility, and reproductive hormone imbalances.
  • Testosterone, % Free+Weakly Bound

Testosterone, Free, Direct

 $48.49

Free testosterone is the biologically active form of testosterone not bound to proteins in the blood. Measuring free testosterone helps evaluate hormonal imbalances and can aid in diagnosing conditions related to reproductive or endocrine function in both men and women.

More info
Sample type
Serum
Avg. sample processing time
6 Business days
Require fasting
No
Biomarkers
  • Free Testosterone The small portion of your testosterone that's unbound and biologically active, considered a more accurate reflection of usable hormone than total testosterone.

Testosterone, Free, Direct With Total Testosterone, LC/MS-MS

 $89.99

Testosterone, Free, Direct With Total Testosterone, LC/MS-MS provides a comprehensive evaluation of androgen status. Total testosterone reflects the overall amount of testosterone in the bloodstream, while direct free testosterone represents the unbound, biologically active portion available for use by the body. This panel is valuable for evaluating androgen status in patients with symptoms of hormonal imbalance, such as infertility, sexual dysfunction, or irregular menstrual cycles. It helps differentiate between primary and secondary hypogonadism and is also useful for monitoring testosterone replacement therapy.

More info
Sample type
Serum
Avg. sample processing time
6 Business days
Require fasting
No
Biomarkers
  • Free Testosterone The small portion of your testosterone that's unbound and biologically active, considered a more accurate reflection of usable hormone than total testosterone.
  • Testosterone The primary male sex hormone, also present in women in smaller amounts. Evaluated for low testosterone symptoms, fertility, and reproductive hormone imbalances.
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