TM Flow System
Discover the Power of the TM Flow System
A non-invasive, in-office diagnostic solution that performs three billable tests in minutes. The TM Flow System evaluates autonomic nervous system function, vascular issues, and supports early diagnosis—all in a single session.

Primary Care Diagnostics
Primary Care Diagnostics provides cutting-edge, non-invasive diagnostic systems that empower healthcare providers to deliver better patient outcomes while boosting practice revenue.
With over 50 years of combined experience, we offer high-quality equipment, expert training, and ongoing support to help you integrate advanced diagnostic testing seamlessly into your practice.
Our Featured Diagnostic Systems
TM Flow System

Revolutionizing Autonomic & Vascular Assessments
The TM Flow System provides a comprehensive, in-office evaluation of autonomic function, vascular health, and cardiometabolic risk factors—all in just 7-10 minutes. Designed for early detection and follow-up care of chronic metabolic diseases like diabetes and vascular conditions, this patented system allows providers to perform and bill for three CPT codes, maximizing reimbursement potential.
The TM FLOW System includes the following tests to determine these clinical outcomes and includes:
- Sudomotor function tests – using sympathetic skin response
- Photo-plethysmography analysis – using an oximeter. This includes heart rate variability analysis and spectral analysis of the oximeter waveform.
- Cardiac Autonomic Reflex Tests or EWING Tests: which include valsalva maneuver, deep breathing exercises, postural changes
- Ankle Brachial Index (ABI ) measurement using PPG
VAT® ENGPlus™ System

Comprehensive Vestibular & Fall Risk Testing
The VAT® ENGPlus™ System delivers vestibular and neurological assessments in under 25 minutes, making it an excellent tool for identifying patients at risk of falls. With established CPT codes and Medicare reimbursements averaging $200-$300 per test, this system is a profitable, essential addition to your diagnostic services.
PCD-PFT
Spirometer

PCD-PFT represents the state-of-the-art performance in PC-based spirometry. It is an accurate and precise diagnostic spirometer with embedded ambient condition measuring sensors for automatic real-time BTPS correction.
Universal ECG

The smallest and lightest 12-channel ECG on the market. Connect the Universal ECG to any Personal Computer (PC), Laptop, or Pocket PC to acquire, store and analyze up to 12-channels of high-resolution ECG data.
ANS-1 System The ANS-1 System utilizes the Sudomotor Testing, Autonomic Function Testing and Vascular Assessment for a complete evaluation of small fiber neuropathy, autonomic dysfunction, arterial stiffness and blood pressure. The test is only 5 minutes and is billed with CPT Codes 95921 and 95923.
The COGNISION® System is a user-friendly, advanced device that allows clinicians to assess brain function through ERP/EEG testing. Ideal for evaluating conditions such as concussion and dementia, it delivers fast, reliable in-office results and provides actionable data to support diagnosis and ongoing patient care.
Expand Your Practice. Increase Revenue. Improve Patient Care.
Why Choose Primary Care Diagnostics?
- High-Quality, Proven Equipment – We hand-select only the best diagnostic systems.
- 50+ Years of Industry Expertise
- Personalized Support
- Flexible Financing Options