Most Popular Tests

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Increased CRP levels are found in inflammatory conditions including: bacterial infection, rheumatic fever, active arthritis, myocardial infarction, malignancies and in the post-operative state. This test cannot detect the relatively small elevations of CRP that are associated with increased cardiovascular risk.

Cardio IQ® Diabetes Risk Panel with Score - 

Cardio IQ® Glucose; Cardio IQ® Hemoglobin A1c; Cardio IQ® Cholesterol, Total; Cardio IQ® HDL Cholesterol; Cardio IQ® Triglycerides; Cardio IQ® Non-HDL and Calculated Components; Cardio IQ® 8 Year Diabetes Risk

If Triglyceride is >400 mg/dL, Cardio IQ® Direct LDL will be performed at an additional charge (CPT code(s): 83721).

Clinical Significance

Permit the assessment of serum glucose levels and lipid levels and the prediction of the 8-year future risk of developing diabetes mellitus in patients without diabetes mellitus.

• Assess risk for developing type 2 diabetes mellitus
• Identify lifestyle interventions and/or pharmacotherapy
• This test provides an 8-year risk of developing type 2 diabetes

Type 1 diabetes mellitus is defined as a deficiency of insulin secretion. Type 2 diabetes, which accounts for greater than 90% of all diabetes cases, is caused by a combination of insulin resistance and an inadequate compensatory insulin secretion.

Type 2 diabetes frequently goes undiagnosed, because it has no classic symptoms of diabetes and it progresses slowly from a pre-diabetic state. 

The U.S. Centers for Disease Control and Prevention estimates that 37% of individuals that are greater than 20 years old and approximately  half of those are greater than 65 years old have pre-diabetes. These individuals are at high risk for progression to type 2 diabetes and are candidates for preventive therapy that include lifestyle modification, such as weight  loss, increased physical activity, and medication.

IMPORTANT: For risk calculations to be performed, the following patient-specific information must be provided and recorded at the time of specimen collection:

  • Age: Years 
  • Gender: M (for male) or F (for female) 
  • Height Feet: Feet 
  • Height Inches: Inches 
  • Weight: lbs 
  • Race-African American: Y (for yes) or N (for no) 
  • Systolic Blood Pressure: mmHg
  • Diastolic Blood Pressure: mmHg
  • Treatment for High B.P.: Y (for yes) or N (for no) 
  • Diabetes Status: Y (for yes) or N (for no)
  • Parental History of Diab: Y (for yes) or N (for no) 
  • Smoking Status: Y (for Yes) or N (for no)

To assist with control of blood glucose levels, the American Diabetes Association (ADA) has recommended glycated hemoglobin testing (HbA1c) twice a year for patients with stable glycemia, and quarterly for patients with poor glucose control. Interpretive ranges are based on ADA guidelines

An elevated concentration of Homocysteine is an independent risk factor for cardiovascular disease.

Useful in predicting risk of cardiovascular disease.

Insulin is useful in diagnosing hyperinsulinemia in hypoglycemic patients. Hyperinsulinemia may be due to an insulin-producing tumor (insulinoma), syndrome of insulin resistance, or persistent hyperinsulinemic hypoglycemia of infancy.

This is the most common Lipid Panel. Components include those useful in the detection, classification, and monitoring of patients with hyperlipidemia.

Total LDL and HDL cholesterol, in conjunction with a triglyceride determination, provide valuable information for the risk of coronary artery disease. Total serum cholesterol analysis is useful in the diagnosis of hyperlipoproteinemia, atherosclerosis, hepatic and thyroid diseases.

This assay is useful to monitor exposure to chromium, progress of medical treatment or determine nutritional status.

Coenzyme Q10 (CoQ10) is a substance similar to a vitamin. It is found in every cell of the body. Your body makes CoQ10, and your cells use it to produce energy your body needs for cell growth and maintenance. It also functions as an antioxidant, which protects the body from damage caused by harmful molecules.

  • Allergen Gluten
  • Egg Yolk
  • Maize/Corn
  • Soybean
  • Casein/Cow Milk
  • Allergen Betalactoglobulin
  • Yeast
  • Tomato
  • Peas

Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency). Patient needs to have the specimen collected between 7 a.m.-9 a.m.

Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).

Cortisol is increased in Cushing's Disease and decreased in Addison's Disease (adrenal insufficiency).

COVID-19 Antibody (IgG), Immunoassay

IMPORTANT - Test collection is available only to patients who: are asymptomatic; have been asymptomatic for at least 10 days; lack a fever (as assessed by non-contact thermometer checks at time of visit); and are wearing a face mask.


Patients suspected of having or confirmed to have active COVID-19 infection or disease may not visit Quest patient service centers, which are not equipped to collect the necessary respiratory specimens for molecular COVID-19 diagnostic testing. Patients who believe they may have COVID-19 are strongly encouraged to contact their healthcare provider.

"This test checks for a type of antibody called immunoglobulin G (IgG) that is the result of past or recent exposure to COVID-19, also known as the novel coronavirus. The human body produces IgG antibodies as part of the immune response to the virus. It usually takes around 10 to 18 days to produce enough antibodies to be detected in the blood.

Test results may help identify if you were previously exposed to the virus and, if exposed, can check whether or not your body has produced antibodies. Antibodies typically suggest protective immunity after you’ve recovered or been exposed to COVID-19. However, evidence is still being collected to determine if IgG antibodies provide protective immunity against SARS-CoV-2, the virus that causes COVID-19 infection.

If you were never diagnosed with COVID-19, this test can help determine if you may have been previously exposed to the virus.

If you were diagnosed with COVID-19, this test can check whether or not your body has produced antibodies.

Multiple sources, including the CDC and healthcare experts, recommend you discuss your test results and whether to return to work with your healthcare provider and employer.

PATIENT SERVICE CENTERS - COVID-19 Antibody (IgG) testing requirements.


2. AN APPOINTMENT IS REQUIRED - For the safety of patients and employees, Quest has limited appointment times for COVID-19 Antibody (IgG) testing.

This test may be helpful if you: 

  • Have had a positive test for COVID-19 and it has been at least 7 days and you want to know if you have detectable levels of IgG antibodies
  • Have not experienced a fever or felt feverish in the last 3 days
  • Have not experienced new or worsening symptoms of COVID-19 in the past 10 days: loss of smell or taste, shortness of breath or difficulty breathing, feeling weak or lethargic, lightheadedness or dizziness, vomiting or diarrhea, slurred speech, and/or seizures

This test may NOT be helpful if you are: 

  • Feeling sick or have had a fever within the last 3 full days, please contact a healthcare provider
  • Trying to diagnose COVID-19, please contact a healthcare provider
  • Less than 7 days since being tested for and diagnosed with COVID-19
  • Directly exposed to COVID-19 in the past 14 days
  • A person with a compromised immune system, a condition that makes it difficult to fight infections
  • For the latest information on COVID-19, please visit our website for information for patients.

What will my results tell me? - Your test results may help identify if you were exposed to the virus and, if so, whether or not your body has these antibodies. Although having antibodies usually gives immunity from further infection, there is not enough evidence at this time to suggest that people who have IgG antibodies are protected against future SARS-CoV-2 infections. ?Results from this test also will not provide any information on whether you can spread the virus to others. 

If you have questions about returning to work, contact your employer for guidance. Be sure to continue to follow federal, state, and local government guidance regarding social distancing and isolation. 

Are there any limitations to IgG antibody tests? - It usually takes around 10 to 18 days after being infected with SARS-CoV-2 for your body to produce enough antibodies for detection in the blood. Getting an IgG antibody test too soon after being infected may cause a negative result that is false (false negative). Additionally, IgG antibody tests may detect IgG antibodies from previous exposure to coronaviruses other than SARS-CoV-2. This can cause a positive result that is false (false positive). There is not enough evidence at this time to suggest that people who have IgG antibodies are protected against future SARS-CoV-2 infections. 

Are there any risks involved in getting this test? - There is no risk involved in getting this test. The test is conducted by collecting a blood sample. 

How do I prepare for the test? - To have your specimen collected at the patient service center, you will need to wear a face mask, consent to a non-contact thermometer checks at the time of visit, and depending upon the patient service center schedule an appointment. There is no other special preparation other than the requirements to receive this test that is restricted to only to patients who: are asymptomatic; have been asymptomatic for at least 10 days; lack a fever (as assessed by non-contact thermometer checks at time of visit); and are wearing a face mask.

What is coronavirus disease (COVID-19)? 
Coronavirus disease (also called COVID-19) is a serious respiratory illness. It is caused by SARS-CoV-2 (severe acute respiratory syndrome coronavirus), one of the most recently discovered types of coronaviruses. It was first identified in Wuhan, China, at the end of 2019 and has spread globally, becoming a worldwide pandemic. Those who have this disease may or may not experience symptoms, which range from mild to severe. 

What is a serology test? 
This serology? ?test checks for a type of antibody called ?immunoglobulin G (IgG)?. If you’ve been exposed to the SARS-CoV-2 virus, your body produces IgG antibodies as part of the immune response to the virus. This test cannot tell you if you have an active infection with SARS-CoV-2. If you suspect you have COVID-19, follow up with your healthcare provider about getting a molecular (PCR) test. 

Note: This test can sometimes detect antibodies from other coronaviruses, which can cause a false positive result if you have been previously diagnosed with or exposed to other types of coronaviruses. Additionally, if you test too soon, your body may not have produced enough IgG antibodies to be detected by the test yet, which can lead to a false negative result. 

At this time, antibody testing is mainly used in studies to determine how much of the population has been exposed to COVID-19. There is not enough evidence at this time to suggest that people who have IgG antibodies are protected against future COVID-19 infection. Positive or negative antibody tests do not rule out the possibility of COVID-19 infection. Results also do not provide any information on whether you can spread the virus to others.

DHEA is a weakly androgenic steroid that is useful when congenital adrenal hyperplasia is suspected. It is also useful in determining the source of androgens in hyperandrogenic conditions, such as polycystic ovarian syndrome and adrenal tumors.

Measuring the circulating levels of estradiol is important for assessing the ovarian function and monitoring follicular development for assisted reproduction protocols. Estradiol plays an essential role throughout the human menstrual cycle. Elevated estradiol levels in females may also result from primary or secondary ovarian hyperfunction. Very high estradiol levels are found during the induction of ovulation for assisted reproduction therapy or in pregnancy. Decreased estradiol levels in females may result from either lack of ovarian synthesis (primary ovarian hypofunction and menopause) or a lesion in the hypothalamus-pituitary axis (secondary ovarian hypofunction). Elevated estradiol levels in males may be due to increased aromatization of androgens, resulting in gynecomastia.

IMPORTANT - Note the Estradiol test included in this panel is not for children that have yet to start their menstrual cycle.  If this test is ordered for a child that has yet to begin their menstrual cycle Quest Diagnostics labs will substitute in Estradiol, Ultrasensitive LC/MS/MS - #30289 at an additional charge of $34

Estrogens are secreted by the gonads, adrenal glands, and placenta. Total estrogens provide an overall picture of estrogen status for men and women.

This test is useful in the differential diagnosis of pituitary and gonadal insufficiency and in children with precocious puberty.

Serum glucose levels may be abnormally high (hyperglycemia) or abnormally low (hypoglycemia). Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolic disorders including diabetes mellitus, idiopathic hypoglycemia, and pancreatic islet cell neoplasm.

Elevated levels of homocysteine are observed in patients at risk for coronary heart disease and stroke.

Iodine is an essential element that is required for thyroid hormone production. The measurement of iodine serves as an index of adequate dietary intake.

A lipid panel includes:Total cholesterol —this test measures all of the cholesterol in all the lipoprotein particles.High-density lipoprotein cholesterol (HDL-C) — measures the cholesterol in HDL particles; often called "good cholesterol" because it removes excess cholesterol and carries it to the liver for removal.Low-density lipoprotein cholesterol (LDL-C) — calculates the cholesterol in LDL particles; often called "bad cholesterol" because it deposits excess cholesterol in walls of blood vessels, which can contribute to atherosclerosis. Usually, the amount of LDL cholesterol (LDL-C) is calculated using the results of total cholesterol, HDL-C, and triglycerides.Triglycerides — measures all the triglycerides in all the lipoprotein particles; most is in the very low-density lipoproteins (VLDL).Very low-density lipoprotein cholesterol (VLDL-C) — calculated from triglycerides/5; this formula is based on the typical composition of VLDL particles.Non-HDL-C — calculated from total cholesterol minus HDL-C.Cholesterol/HDL ratio — calculated ratio of total cholesterol to HDL-C.