Quest Diagnostics: What Is It? Everything You Need To Know

Quest Diagnostics: What Is It? Everything You Need To Know


QUEST DIAGNOSTICS is an American company that offers a large variety of laboratory and diagnostic services. This article will break down the different information that Quest Diagnostics offers.

Table Of Contents:

What Is Quest Diagnostics?

QUEST DIAGNOSTICS is a clinical laboratory focused on providing patient care and health information services in immunology, molecular diagnostics, infectious diseases, and cardiology.

They provide diagnostic health services for almost all areas of medicine and offer over 5,000 clinical assays available for testing at a wide range of locations. The company offers testing as an in-network provider with several insurance companies.

QUEST DIAGNOSTICS is among the world's largest providers of blood tests; they also offer a variety of other medical/health services, including blood collection, laboratory operations management, medical education, and the development of radiology technologies to improve patient outcomes.

The company is in business for over 50 years and has had a long history of proven results regarding quality. The company is the largest provider of high-performance clinical laboratory services for physicians' offices and hospitals, which markets as "lab on demand."

Over a few decades of experience in the industry and millions of patients later, Quest Diagnostics has become a trusted provider of clinical lab tests.  For years, it has been the number one choice of hospitals and physicians nationwide.

QUEST DIAGNOSTICS is committed to providing its customers with accurate and efficient medical testing services. Last year, Quest provided more than 2.6 million laboratory testing services to over 30 million patients. A diverse range of diagnostic services is available, including Hematology, Chemistry, Urinalysis, Cytology, and more.

History of Quest Diagnostics:

QUEST DIAGNOSTICS was the first company to create a biochemistry lab for clinical diagnosis. It was also the first company to provide integrated medical laboratory services. The company was acquired by Siemens in 1999. QUEST DIAGNOSTICS was founded in 1947 and is headquartered in New Jersey, United States.

In 2006, Quest Diagnostics was the top provider of testing services in the United States and Europe regarding revenue for medical clients and diagnostics. In 2005, Quest Diagnostics had revenue of $6.39 billion.

Since then, Quest Diagnostics has set records for opening new centers and for expanding as a company. In 2007 Quest Diagnostics announced that they were scheduled to open over twenty new centers across Europe and put out an ad campaign that linked their services to national health care plans in the US.

Operations at Quest Diagnostics:

The company operates through three segments: Medical Laboratory, Diagnostic Products, and Quest Diagnostics Health Services (QDHS), which are as follows:- 

  • The Medical Laboratory segment provides clinical laboratory services to physicians, hospitals, health systems, and specialty physicians. 
  • The Diagnostic Products segment includes the manufacturing and distributing of a broad range of diagnostic products for clinical use in hospitals, reference labs, and physician offices. 
  • Quest Diagnostics Health Services(QDHS) segment includes Quest Diagnostics' capabilities to manage, process, and analyze laboratory information to provide quality health information and patient-reported outcomes.

What time does Quest Diagnostics open?

At Quest Diagnostics, business hours are from 8:00-4:30 Monday through Friday. A few locations might be open a little later on Saturdays or close earlier on Sundays. QUEST DIAGNOSTICS does not always honor the same office hours listed online, so you might want to call first to confirm before heading over.

If you want to know the exact time that the Quest Diagnostics opens or closes, click here and enter the city and state under 'Find a Quest location near you where you need this information, as well as the zip code where you want to know when it opens or closes.

It will show you what time Quest Diagnostics opens for a particular zip code for any day of the week and year.

Quest Diagnostics is closed on major holidays, including:

  • New Year's Dayz
  • Memorial Day
  • Independence Day
  • Labor Day
  • Thanks giving day
  • Christmas day

How to speak with someone at Quest Diagnostics?

Below mentioned are the steps that can be followed to contact Quest Diagnostics:

Step 1: Start with their Customer Support Desk. You can find this by clicking "Contact Us," and then in the "Support" area of their website, select your query. Don't know what that means? Well, email them at, and they will help you.

Step 2: If you're still unsure what questions to ask, click "Live Chat," and then they will answer your questions and email you back. During the whole process, they will have plenty of helpful links to various areas of their website to help you.

Step 3: For more specific technical help, head over to the "Support Area" of their website. It has plenty of resources for detailed information, help, and procedures.

Step 4: If you prefer to talk to a person, not email (you can call their main number at 1(866)-697-8378

You'll be talking to a specialist on the other side to help you with your specific needs and questions.

Step 5: If none of the above methods worked for you, there is also "Technical Support." You can contact them at 1(800) 877-7484, but if they are already working on an issue, they won't be able to help you.

Step 6: Still didn't answer your questions? Then try searching their website for the information you need. They have a search bar that will help you get most of what you need.

Quest policy is based upon three primary rules:

  • Rule 1: Individuals should have the right to privacy while using the toilet and urinating into a sample container.
  • Rule 2: Toilets are designed for one person at a time use. Additionally, they do not want to create an awkward situation with their staff members.
  • Rule 3: At Quest Diagnostics, they do not provide laboratory personnel responsible for monitoring an individual's urine while urinating in a toilet. This task is handled by the individual collecting the sample.

Quest also believes that all individuals have the right to privacy while urinating into a container at home. As such, they should be able to handle their collection and transportation without outside assistance or supervision.

Some testing companies require staff to watch an individual collect a sample, but this is not what Quest practices.

How can I make an appointment at Quest Diagnostics?

You can schedule your appointment in three different ways:

  • Make an appointment online at the Quest Diagnostics official website.
  • Call Quest Diagnostics toll-free customer service number at 1(800) 222-6839 to schedule an appointment over the phone.
  • Visit a local Quest Diagnostics near you and make an appointment there, in person. The company has more than 5000 test centers worldwide, and most of them offer same-day services, allowing you to get tested and receive results very quickly.

For scheduling your appointment online, follow the steps mentioned below:

  1. The first thing you'll need to do is create an account on their website, easy and free. You can create an account with your personal information.
  2. Once you have a username and password, you can go to the "home" page and select the "Make an Appointment" button. After that, click on "Schedule Appointment."
  3. Once you're on the Schedule Appointment section, then you can select the name of the service you need.
  4. The next step is that it will show the different services by price and location. You can scroll down to find the location of the Quest lab that suits you and then click on it.
  5. After that, Quest Diagnostics will take you to another page with more details about the appointment information. You can select "view availability" or "Schedule" and book your slots with specific times and dates.

Do I need an appointment for Quest Diagnostics?

Yes, it is suggested. To visit Quest Diagnostics, you need to schedule an appointment beforehand. It is recommended not to go directly to the office of Quest Diagnostics without making an appointment first. It helps make sure that the doctors have enough time to devote to your needs and your questions.

You can even let them know before what tests you'd like to have run to help make sure they have everything ready for you.

There is another benefit to having an appointment as well. You'll be able to have your blood drawn at a faster rate and get the results quicker than if you were showing up on a whim. It is especially true if you show up without any notice.

QUEST DIAGNOSTICS will run your tests as soon as possible, but they will not necessarily rush them. To receive your results on time, you'll need to call ahead and schedule before heading over there.

If you are going in for a drug test and do not want to take appointments, you can book your drug test online with a trusted drug testing service provider like US Health Testing. They are a partner of Labcorp and have more than 2500 labs all over the USA.

What are all the tests done by Quest Diagnostics?

The most comprehensive lab tests for more than 25 diseases and conditions, Quest Diagnostics offers a full range of services designed to help manage various aspects of your health. However, the number and type of available tests vary based on the location.

QUEST DIAGNOSTICS offers a broad range of services to help you get the most out of your health. Some of its popular offerings include the following:

  1. Blood testing: Helps diagnose anemia, diabetes mellitus, or other medical conditions that result in low blood cell counts. It can also detect the presence of diseases such as hepatitis B and HIV. Most blood tests take about 10 minutes to complete.

PRICE - $10 - $99

  1. Hepatitis C Tests: The Company's Hepatitis C Rapid Test is highly accurate since it covers all six types of Hepatitis C. It works by detecting a specific protein found in the blood cells of people who already have Hepatitis C and those currently infected.

PRICE - $10 - $53

  1. Infertility Tests: The Company offers sperm tests and a whole suite of services for couples trying to get pregnant. Among these are ovulation prediction kits, fertility monitors, and digital pregnancy tests.

PRICE - $16 - $40

  1. STD Tests: For people who are thinking about starting a family, it's essential to know one's STD status to reduce the risk of transmitting STDs to your partner when you conceive.

PRICE - $49 - $199

  1. Liver function tests: It is used to test enzymes in the liver associated with health problems, such as hepatitis. Liver enzymes change in response to injury or disease of the liver.

PRICE - $49

  1. Stool Culture: It is done to detect the presence of a wide variety of bacteria, pathogens, and parasites in your stool. It is also used to test for various digestive disorders such as diverticulitis or colitis. Stool testing takes about five minutes to complete.

PRICE - $109

  1. Thyroid Panel: This includes thyroid hormone levels and antibodies for thyroid disorders. It is used to help detect changes in thyroid function, diagnose hyperthyroidism or hypothyroidism.

PRICE - $150

  1. Complete Blood Count (CBC) with Differential: This test measures normal red blood cells (erythrocytes) levels, white blood cells (leukocytes), and the hemoglobin in the red blood cells (hemoglobin).

PRICE - $10 - $35

  1. A1C Test: This test is used to determine a patient's average blood sugar level in the last 2-3 months before getting tested. It also determines what the patient's blood sugar level is at any given point in time.

PRICE - $10 to $53

  1. Prostate-Specific Antigen (PSA): This test is used to help diagnose prostate cancer early as possible.

PRICE - $85

  1. HIV-1/2 Antibody: This test is used to detect antibodies to HIV in a human serum or plasma specimen.

PRICE - $45 - $65

  1. Comprehensive Metabolic Panel: This panel includes various tests for determining kidney and liver function and electrolytes, blood sugar levels, and other blood components.

PRICE - $75

  1. COVID-19: Laboratory testing mainly includes molecular diagnostics to recognize viral RNA during active infection and serology testing to distinguish antibodies delivered by the body exposure openness to the disease.

PRICE - $125

NOTE: Costs may vary by market. Check the site for updated details


  • Does Quest Diagnostics accept Medicare?
  • If you're insured through Medicare, Quest is the perfect lab for you. They are accredited by the Centers for Medicare Services (CMS) and have locations throughout the United States.

    Medicare is a health insurance program offered by the government for people aged 65 or older (or under 65 but have specific disabilities). If you have Medicare Part B, it covers related services such as diagnostic tests for cancer, diabetes, and cholesterol.

    What's more, if you have Medicare Part B and go to a lab that isn't a part of Medicare's approved network, they will cover the costs associated with these types of services. It can significantly reduce your out-of-pocket expenses.

    And, if you're unsure of your eligibility for a particular service or procedure or need help calculating your out-of-pocket costs, use Quest's calculator.

    Many people who have Medicare Part B are also eligible for Medicare Advantage, a private health insurance program created by the federal government. Specifically, this program allows Medicare-eligible individuals to receive health care coverage from a private insurer instead of going through the traditional Medicare program.

  • Does Quest Diagnostics accept Medicaid?
  • In the United States, Medicaid is a bi-partisan program funded in the US with federal and state dollars. It is used to provide healthcare to people that are financially disadvantaged and low income. The program targets those most in need based on several criteria.

    QUEST DIAGNOSTICS is accepting Medicaid as a form of payment at its thousands of locations across the United States. To confirm your eligibility, you must call the Quest Diagnostics customer service telephone number available through the Quest website.

    You may also verify that you are eligible for Medicaid by checking your eligibility with your Medicaid program or calling your local insurance department.

    If you are an enrolled Medicaid patient, contact your Medicaid program to verify the test that you want and how Quest can submit the test results to your insurance company for reimbursement.

    QUEST DIAGNOSTICS has been a partner for Medicaid since 1994. Their business model relies heavily on providing healthcare to people who have limited means and financial resources.

  • Will I get a call from quest diagnostics if I fail a drug test?
  • QUEST DIAGNOSTICS is a company that can help you pass a drug test. They have to be taken seriously, but it's essential to know that they will not call you if the test fails. They also do not contact you with certification results.

    If you get a call from anyone saying that you've failed, do not believe them. This company will call the only time for the results, and even then, they don't say how you did. It's also important to remember that they won't confirm their results with you either.

    It's important to know that Quest Diagnostics will not give you their test results over the phone. They won't tell you what drugs you tested positive for either. It is something that everyone should be aware of when using this company.

  • Does Quest Diagnostics watch you while you pee?
  • Quest Diagnostics does not watch you urinate. The Cup is a one-time sample that needs only to gather the urine from a single stream and be rotated 180 degrees underwater in the toilet. It should be done as quickly and unobtrusively as possible to be handed over to the lab technician without any disruption.

    It is a well-known fact that certain laboratory personnel will not observe urination samples – or pull them from the toilet for individuals with disabilities – because of personal privacy concerns. At Quest Diagnostics, they respect this privacy policy and hold it in high regard.

  • Does Quest Diagnostics test for synthetic urine?
  • To pass a drug test, patients use synthetic urine. This pee-like liquid is meant to trick the lab into thinking your urine contains no drugs. But does Quest Diagnostics test for synthetic urine?

    QUEST DIAGNOSTICS tests for the presence of synthetic ingredients that are often added to fake urine products. Any time you submit anything but your urine for testing, you are putting yourself at serious risk, and the validity of your test results is questionable at best.

    It describes that the only way you can get away with using synthetic urine is to use it in a simulation or practice setting. You cannot submit fake urine for any reason whatsoever, including passing a drug or alcohol test.

    QUEST DIAGNOSTICS also tests for the exclusive presence of proteins found in human urine and has been doing so for years. If your fake pee doesn't contain these proteins, the lab technicians will know something is fishy.

  • Does Quest Diagnostics do a PPD test?
  • A Purified Protein Derivative (PPD) test is a basic bloodstream infection test. It's somewhere the same as getting your blood tested at your local doctor or lab. However, Quest Diagnostics states that they don't do these PPD tests.

    Quest Diagnostics reportedly stopped offering the PPD test because physicians had to order the test directly from Quest Diagnostics, and there were only a few labs that were processing it.

  • Does Quest Diagnostics drug test their employees?
  • Generally, drug tests are administered as part of an employment screening process to measure the use of illicit drugs or alcohol in a person's system. The testing could be as part of the individual's applications for employment or by a third party somewhere else in the process.

    QUEST DIAGNOSTICS conducts random and pre-employment drug testing of all new employees in all the service lines, including customer satisfaction centers, clinical laboratories, employee assistance programs, and more.

    The company does not conduct routine random drug tests for existing employees, however. QUEST DIAGNOSTICS only tests employees when there is suspicion or evidence of any drug or alcohol use while at work.

    The company's policy prohibits using illegal drugs, legal non-prescribed drugs, misuse of prescription drugs, and alcohol abuse, and testing helps in the process. QUEST DIAGNOSTICS has the right to test an employee and conduct random drug tests on all employees in some service lines, including clinical laboratories.

    If you are having a drug test coming up at Quest Diagnostics, it is better to test yourself with at-home drug testing kits to identify the drug test levels and take necessary precautions.

  • Does Quest Diagnostics accept Aetna Insurance?
  • The answer is yes. Aetna and Quest Diagnostics are working together to offer you a seamless way to get the care you need. This new partnership will enable you to use your insurance at Quest without getting an exam or referral from your doctor.

    Your Quest medical report will come directly from Aetna. You will just be paying your regular copay.

  • Does Quest Diagnostics do DOT Physicals?
  • QUEST DIAGNOSTICS offers DOT physicals for jobs in transportation. If you're looking for a way to get your DOT physicals without having to make a trip to your local doctor's office or hospital, then Quest Diagnostics can help you.

    DOT physicals are functions of the Transportation Security Administration (TSA). Each year, they regulate more than 600 million pounds of hazardous materials. They aim to improve the safety of our aviation system by preventing terrorism and other threats to transportation security.

  • Does Quest Diagnostics do sperm analysis?
  • The answer to this question is yes. QUEST DIAGNOSTICS does offer sperm analysis tests.

    QUEST DIAGNOSTICS offers a comprehensive, accurate panel of tests that can help with this – analyses of seminal fluid, sperm counts, motility, and morphology.

    Their team is experienced in conducting these assessments and interpreting the results, so you have more information about your reproductive health...

    The sperm analysis test at Quest Diagnostics is a fast and easy way to determine whether your sperm count falls within the expected parameters. It's a relatively simple in-office procedure that takes only about 5 minutes.

  • Does Quest Diagnostics do pregnancy tests?
  • Pregnancy tests are offered by Quest Diagnostics but only after a consultation. The first step in finding out whether a pregnancy test is proper for you is to talk with your doctor about your pregnancy symptoms. It will help your doctor determine the best test for you and get you in touch with the lab that can provide it.

    There are other services at Quest Diagnostics as well, including tests for fertility and STD support. The lab also offers birth control and prenatal vitamins.


    The goal of this article is to provide readers with additional information about Quest Diagnostics. The audience is primarily people who are interested in healthcare or lab work. This article incorporates its research, products, how they present themselves, and their history.

    The purpose of this article is to inform readers about Quest Diagnostics. This article should be informative and factual.

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