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A Comprehensive Guide to TM Flow Test in Diagnostics

Writer's picture: Bo McCorkleBo McCorkle

Updated: Feb 6




A TM flow test is used in diagnostics to identify vascular and autonomic nervous system dysfunctions. This test uses multiple technologies to identify different disorders at a time. It is a highly accurate, rapid, and noninvasive test that can detect several cardiovascular and metabolic disorders early and manage diseases. Let's find out more about TM flow in this blog.


What is a TM Flow Test?

TM mean "Telemedicine." This test uses a medical device that is a combination of three different technologies:


TBL-ABI: This technology measures the Ankle Brachial Index (ABI), which compares blood pressure in the ankle with blood pressure in the arm. It helps screen for Peripheral Artery Disease (PAD) by identifying blockages or narrowing in peripheral arteries.


SWEATC: This component assesses the cholinergic sympathetic vasodilatory response by measuring the galvanic skin response. It evaluates the function of sweat glands and the autonomic nervous system to detect conditions like small fiber neuropathy.


LD-OXi 2:  This technology analyzes the pulse waveform to assess heart rate variability (HRV) and endothelial function. It measures changes in blood volume and analyzes autonomic nervous system function.


Using these three technologies, TM flow can diagnose disorders related to the vascular and autonomic nervous systems (ANS). This test measures different body vital signs at a time, so its accuracy is higher than the other conventional tests. The age range of this test is mostly 50-70, but younger people can get it too to avoid the risk of diseases.


How is a TM Flow Test Done?

This test is usually performed by technicians. The TM flow procedure is very simple and easy to perform.


  • The patient is asked to lie down still for five minutes to get accurate readings.

  • Sensors and electrodes are attached to his arms, wrists, and feet to measure blood pressure, skin responses, and other vital signs.

  • The TBL-ABI system rapidly measures the ABI, the SWEATC device assesses sudomotor function, and the LD-OXi component captures photoplethysmography data.

  • The collected data is subjected to mathematical analysis to understand vascular function and autonomic nervous system responses.

  • Results are displayed in an easy-to-read format, which is interpreted by physicians.

What Does a TM Flow Test Show?

TM Flow testing system can reveal several disorders and help in the management of diseases by detecting them at an earlier stage. 

Vascular Assessment

Ankle Brachial Index (ABI): A low ABI can indicate PAD, a condition that reduces blood flow to the limbs due to narrowed arteries. Conversely, a normal ABI value suggests healthy circulation.


Arterial Stiffness: Increased arterial stiffness can be a risk of cardiovascular disorders and usually occurs due to hypertension, diabetes, and aging. This condition is also an alarm of heart attack and stroke.


ANS Assessment

HRV: Low HRV may indicate cardiac autonomic dysfunction, which can cause arrhythmias and heart failure. Monitoring HRV can detect cardiovascular diseases at an early stage.


Sudomotor Function: Abnormal sweat test can indicate small fiber neuropathy. This condition can lead to complications such as foot ulcers and infections, which can be prevented before they occur because of these test results.


Risk Assessment

TM flow can identify the risk of developing several disorders. Patients with symptoms such as fatigue, dizziness, exercise intolerance, or claudication may be identified as at risk for more severe complications, including:

  • Diabetic Complications

  • Chronic Kidney Disease

  • Hypertension

TM Flow Test Results

The results of TM Flow system testing indicate the following conditions:


Normal Results

Healthy vascular function, normal autonomic nervous system activity, and a low risk of cardiovascular diseases.


Abnormal Results

It shows potential issues such as:


Low ABI Values: Suggesting PAD and the need for further vascular assessment.

Low HRV: Possible autonomic dysfunction

Abnormal Sudomotor Function: This may indicate small fiber neuropathy or other underlying conditions.


The TM Flow Test Results are interpreted based on specific readings, which are compared with standard and designated guidelines. It is essential to discuss these outcomes with your healthcare provider.

TM flow assessment usually costs around $2.50-$3, but Medicare generally reimburses between $200 and $300 on average. 


Conclusion

TM Flow system is a device used for advanced diagnostics. The test performed by this device can detect several disorders related to ANS and vascular systems. It is a simple procedure and has early detection capabilities, which play a crucial role in detecting diabetes complications and managing the health of people, particularly at-risk populations. 

FAQs

Will I experience any pain during TM flow testing?

No, it is a non-invasive test performed using sensors and electrodes which do not cause any discomfort.


How long does the test take?

It takes around 15-30 minutes to perform this test, followed by interpretations that depend on your healthcare provider.


What do the TM test results indicate?

The normal results show healthy vascular and ANS function. However, abnormal results could be due to diseases like Peripheral Artery Disease (PAD), autonomic dysfunction, and cardiovascular disorders.


Who should get a TM Flow Test?

This test is usually for individuals 50-70 years of age, but as it can detect diseases early, young people should get it too for routine assessments.


Are there any risks associated with the TM Flow Test?

TM Flow is a non-invasive procedure, so it can not cause any sort of risk during the testing.


Legal Disclaimer: The information contained in this article is provided for informational purposes only and should not be construed as medical or legal advice on any subject matter. You should not act or refrain from acting on the basis of any content included in this site without seeking medical, legal, or other professional advice. The contents of this site contain general information and may not reflect current legal developments or address your situation. We disclaim all liability for actions you take or fail to take based on any content of this article.


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