The test library
The Measura test library
Every assessment in the suite, described twice — once for the person having it, once for the clinician ordering it.
Measura is a suite, not a single study, and the reason it works is that the individual assessments answer different questions. A normal ankle-brachial index does not rule out calcified arteries. A normal nerve conduction study does not rule out small-fiber damage. Reading them together is the point.
Circulation and the arteries
Ankle-brachial index
Blood pressure at the ankle compared with the arm, plus the toe-brachial index and an arterial stiffness index. Read more
Pulse volume recording
Limb volume change with each heartbeat — sensitive where a calcified artery makes the index misleading. Read more
Photoplethysmography
The shape of the pulse waveform at the finger and toe, measured with light. Read more
Arterial stiffness and endothelial function
How rigid the vessel wall has become and how well the lining responds. Read more
Laboratory panels
Insulin and glycemic markers, inflammatory markers, lipid particle analysis, thyroid and hormone panels. Read more
Nerves and the autonomic nervous system
Sudomotor testing
Sweat gland function measured by electrochemical skin conductance — a window on the smallest nerve fibers. Read more
Autonomic nervous system testing
Sympathetic and parasympathetic function at rest and under challenge. Read more
Heart rate variability
Beat-to-beat variation in time and frequency domains. Read more
Cardiac autonomic reflex tests
The standardized challenge maneuvers used to assess cardiac autonomic neuropathy. Read more
Metabolism, balance and cognition
Indirect calorimetry
Resting metabolic rate and respiratory quotient, measured rather than estimated. Read more
Bioimpedance body composition
Lean mass, fat mass and body water — the detail BMI throws away. Read more
Vestibular and balance testing
Inner-ear and oculomotor function, and objective fall risk. Read more
Cognitive assessment
A short structured screen that produces a comparable baseline. Read more
Talk to someone about testing
Tell us what you are trying to find out and we will explain which Measura assessments answer that question, what each one involves, and how the results are reviewed with a clinician.
4477 Woodson Rd, Suite 201, St. Louis, MO 63134. Monday to Friday, 9:00 a.m. to 5:00 p.m. Please do not send symptoms, diagnoses or images through a web form — a website form is not a secure medical channel. Call us with clinical detail.
Common questions
Do I have to have all of them?
No. The suite is selected to the question being asked, which is why the first step is a conversation rather than a booking. How a testing plan is chosen.
Are any of these invasive?
The in-office assessments use cuffs, surface electrodes and optical sensors. Nothing is injected and no radiation is used. What the appointment feels like.
Is this the same as a nerve conduction study?
No. Nerve conduction studies measure large myelinated fibers; sudomotor testing measures the small unmyelinated ones, which are often affected first. Small-fiber versus large-fiber neuropathy.
What happens to the results?
They are compiled into a single report and reviewed with a clinician. How to read your report.
Medically reviewed by Dr. Gurpreet Singh Padda, MD, MBA, MHP, medical director of Measura. Last reviewed .