Confused by medical terms and services? Check out these easy-to-read explanations of common tests and other services, provided at Hannibal Clinic.

Ambulatory Blood Pressure

A patient wears an ambulatory blood pressure monitor for about 24 or 48 hours. The device takes your blood pressure automatically while you do your normal daily activities. It inflates and takes blood pressure measurements several times throughout the day. These measurements are recorded so your doctor can print them out and analyze them. You might use one of these monitors if you might have white-coat (or office) hypertension or if there is a difference between the blood pressure you have at home and in your doctor's office. These monitors can help your doctor diagnose high blood pressure in pregnant women and older adults. Please remember that if your doctor wants you to wear an ambulatory blood pressure monitor, a health professional should fit and size the cuff, which fits around your arm. Fitting does not take long.

Anticoagulation Clinic

Also called the "Coumadin Clinic," at the Anticoagulation Clinic your INR level (thickness of your blood) is tested and your Coumadin dose may be adjusted based on whether or not the INR is in the therapeutic range. Patients can either come into the office and have a finger stick or go to a lab of their choice to have the INR drawn.

Arterial Blood Gases (ABGs)

An arterial blood gas (ABG) test simply measures how much acid, oxygen and carbon dioxide are in your blood. It checks how well your lungs to move oxygen into the blood and remove carbon dioxide. The blood is taken from an artery.

Barium Enema

A barium enema, or lower gastrointestinal (GI) examination, is an X-ray examination of the large intestine (colon and rectum) to help diagnose diseases and other problems. The colon is filled with a contrast material that contains barium so that the large intestine is visible on the x-ray. The contrast material is poured through a tube into the anus.

Bladder Scan

A bladder scan is an ultrasound of your bladder. It tells your doctor how much urine is being retained in your bladder after urination.

Bone Densiometry (Dexa)

Bone Densitometry (Bone Density) is a safe, low-dose x-ray procedure that assists in diagnosing low bone density.

Capsule Endoscopy

Capsule endoscopy allows your doctor to examine your small intestine for blockages or sources of bleeding.

Carotid Duplex

A carotid duplex is an ultrasound that checks for stenosis in the carotid artery and how that stenosis affects your blood flow.

CMG Cystometrogram

Cystometry measures the pressure inside of the bladder to see how well the bladder is working. It is done to see if a muscle or nerve problem may be causing problems with how well the bladder holds or releases urine. During the test, the bladder is filled with water or gas to see how well it holds in and pushes out the water or gas. You may be given a specific medicine to see if your bladder responds normally. A catheter may be placed in your rectum to measure bladder pressure. A small pad or needle may be placed near your anus to measure muscle function.


CT is a diagnostic procedure that creates pictures of the inside of your body. The scanner rotates a detector around your body to create multiple image slices to provide detailed information to the radiologist. It is a painless and non-invasive procedure used to detect blood vessel abnormalities, bone abnormalities, tumors, inflammation and infections and organ health. The CT procedure uses radiation to produce the image pictures.

Drug/Alcohol Screen

Special tests are performed to check for the presence of alcohol or drugs in the system.


An echocardiogram uses ultrasound to see how well your heart muscle and heart valves work. The test can look for types of heart disease and to see how much it progresses and see if treatment is working.


An electroencephalogram measures and records the electrical activity of your brain. Sensors (electrodes) are attached to your head and hooked to a computer. The computer records your brain's electrical activity. Some conditions like seizures can be seen by the changes in the normal pattern of the brain's electrical activity.


An electrocardiogram records the electrical activity of your heart through small electrode patches attached to your chest, arms, and legs. It is used to look for symptoms that may indicate heart problems.


An electromyogram measures the electrical activity of muscles while contracting and while resting. These studies look at how well and how fast the nerves can send electrical signals.

Event recorder

An event recorder is a heart monitor that a patient wears all of the time, for a month. It records heart rhythms and this information is shared with your doctor.

Hearing Aid Fitting and Service

Our audiology department can fit your hearing aid so it is most effective for you. We can then provide the service you need to keep it running in optimum condition.

Holter Monitor

A holter monitor is a portable EKG that monitors the electrical activity of a your heart, usually one or two days, 24 hours a day. A doctor may order this when s/he thinks you may have an abnormal heart rhythm.

HSG Hysterosalpingogram

A hysterosalpingogram (HSG) is an X-ray that looks at the inside of the uterus and fallopian tubes and the area around them. It is often used for women who are having a hard time becoming pregnant.

Industrial Physical

Our Industrial Medicine department performs Industrial Physicals on employees for many local companies. We make sure per company request, that the employee or applicant is fit for duty as per job requires and they are able to perform the essential functions of the job.


An intravenous pyelogram (IVP) is an X-ray that takes pictures of the kidneys, the bladder, the ureters, and the urethra. It can show the size, shape, and position of the urinary tract, and it can provide information on how well the kidneys are doing their job.


Our lab is open during the same extended hours our Ambulatory Care Center is open, so you will never have to wait for test results. We perform more than 600,000 tests per year in our Lab.


A mammogram is an X-ray of the breast to look for breast cancer. Mammograms can find small tumors that you may not be able to feel.


Once a lump or abnormality has been detected in your breast, your doctor may want to conduct a biopsy. This involves taking sample tissue from the suspicious area to determine whether it is cancerous. This outpatient procedure requires no hospitalization or surgical incision and is usually performed using only local anesthesia. An ultrasound is used to help guide your surgeon’s instruments to the site of the abnormal growth.


MRI uses a magnetic field to create pictures of your body. It is a painless, non-invasive procedure that does not require the use of radiation.

NCV - Nerve Conduction Velocity

The nerve conduction velocity test measures the speed of electricity as it moves through a nerve.

Needle Aspiration Biopsy

A needle aspiration biopsy is guided by an ultrasound. The ultrasound finds the area of concern and the physician places a needle in the area and aspirates it.

Non Stress Test

A nonstress test is used in pregnant women to monitor the heart rate of a fetus.

Nuclear Medicine

Nuclear medicine is used to evaluate the function of organs or the bones in your body. During the exam a small amount of radioactive material (radiotracer) is introduced into your body, and a nuclear medicine gamma camera acquired pictures showing normal and abnormal body functions to detect certain conditions or diseases of that body system. The procedure is safe and painless. The radioactive material usually disappears from your body in 1 to 2 days. The total amount of radiation you receive is comparable to that of a CT Scan.

Otic Lavage

Simply, cleaning the wax out of your ears.

Pacemaker Analysis

Your pacemaker will provide information to your doctor regarding the battery, any funny heart rhythms that have occured and tests will be performed to make sure everything is functioning properly.

PAD (arterial segmental eval)

In a PAD (peripheral arterial disease) test, your legs will be examined for blockages in the blood vessels.

Pulmonary Function Study - FULL

A Pulmonary Function Study measures your lung function. This helps the doctor see early signs of diseases or, if you already have a disease, if it has progressed.

Pulse oximetry - overnight

Pulse oximetry (also called Pulse Ox) is a simple, painless test. The patient uses a small machine overnight to check the levels of oxygen saturation in the blood.

Radiology Services

Includes: CT, MRI, Ultrasound, PET Testing, General Radiology and Nuclear Medicine

Sleep Study

The purpose of a sleep study is to obtain various measurements during sleep (brain activity, heart rate and rhythm, breathing, etc).

Spirometry pre post bronchodilator

Spirometry is a breathing test given to gauge the lung capacity and function.

Stereotactic Breast Biopsy

During this procedure, tiny samples of breast tissue are taken and studied.

Stress Test

Includes: Stress Cardiolite, Stress Dobutamine, Stress Graded Exercise, Stress Persantine, Stress Test Echo

Transtelephonic Pacemaker Analysis

This pacemaker test loooks at battery life and pacing of your pacemaker. It can be done in the office or by telephone.


Tympanogram is a test used to show how the eardrum complies with positive or negative pressure, which then the doctor can use this to help with diagnosis of various ear problems.


Ultrasound (sonography) is an imaging exam that uses high frequency sound waves that are inaudible to the human ear. There is no radiation used. These sound waves bounce off organs and tissues like an echo to create pictures or images. The sonographer views these images “real-time” on an attached monitor. Pictures are taken throughout the exam for the Interpreting Physician to review. Ultrasound is helpful in determining the overall health or dysfunction or abnormality of internal organs and blood vessels and can help identify stones of the gall bladder and kidneys. Ultrasound is helpful in diagnosis of tumors, blockages, plaque build up in vessels and blood clots.

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