surgeons3NIVA™ Lab

The NIVA (Non-Invasive Vascular Assessment) lab is a Vascular Laboratory specializing in the non-invasive screening, diagnosis and management of vascular (blood vessel) disease. The procedures performed are painless and without side effects. No needles, catheters or dyes are required. We utilize advanced Ultrasound and Doppler technologies that allow us to evaluate arteries and veins through intact skin (using handheld probes and blood pressure cuffs). Tests are performed when requested by your doctor. Common tests your doctor may order include:

FullSizeRenderCarotid Duplex

A test to evaluate the arteries in the neck, which supply blood to the brain, for plaque (stenosis). You might have this test if you have symptoms of stroke or TIA (mini-stroke), have a bruit (noise) in your neck or are at high risk for stroke. Ultrasound technology is now so good that therapeutic recommendations can usually be made without additional invasive testing.

Extremity Venous studies

Venous studies are usually performed on the leg or arm. They are commonly ordered to diagnose or rule out a “DVT” (deep vein thrombosis), which is a blood clot within a vein. Patients with this diagnosis often present leg pain or swelling.

seal vascularBW

The NIVA lab is accredited by the Intersocietal Commision for the Accreditation of Vascular Laboratories in extracranial cerebrovascular, peripheral venous, and peripheral arterial testing areas.

Few vascular laboratories in the northern half of the lower peninsula of Michigan, and none in the upper peninsula, are accredited by this highly recognized organization.

Extremity Arterial studies

This test usually looks at the leg arteries, and infrequently the arm arteries to look for PVD (peripheral vascular disease). The most common reason to perform this test is for claudication, which is muscle cramping secondary to low blood flow. You may also have this test if you have an abnormal pulse exam, have a foot wound that doesn’t heal or have a possible leg artery aneurysm.

Aortic Ultrasound

The most common reason for this test being performed is screening, diagnosing or surveillance of Aortic Aneurysms. An aneurysm is an abnormal dilation or expansion of an artery, and the abdominal aorta is the most common location. As it expands, the wall becomes thinner and weaker. When left undiagnosed, aneurysms can continue to get larger and eventually “rupture” which is extremely lethal.

Mesenteric and Renal Duplex

These tests examine the intestinal and kidney arteries. Plaque in these arteries can occasionally cause abdominal pain and in the case of kidney artery blockage, can lead to severe high blood pressure.

“NIVA Screen”

The above tests can only be performed when ordered by a physician. Most insurance companies won’t pay for the above exams in the absence of a symptom or clinical concern. We are offering screening examinations for the three most common vascular diseases with carotid, aortic aneurysm and PVD screening. These tests can be scheduled by the patient directly. Results are given to the patient, and if an abnormality is suspected or identified, information can be directed to the patient’s physician.

Image-guided biopsy

In addition to the above vascular testing, we also offer in-office ultrasound-guided biopsy of breast, thyroid and soft tissue abnormalities. Often times these biopsies can be performed in the same setting as the initial consultation with one of our surgeons, thus speeding up the time of diagnosis.


We offer office-based venous surgery, with the ability to treat chronic venous insufficiency and varicose veins in a minimally invasive fashion: Ultrasound-guided Venefit ClosureFAST endovenous ablation and microphlebectomy. This allows for faster recovery and avoids the need for hospitalization.