Tempus ECG-Low EF vs Tempus ECG-AF

Similar category, different focus. These tools serve overlapping but distinct needs. Comparability 65/100 Comparability is an AI-graded 0–100 score of how directly these two tools compete — higher means a more apples-to-apples comparison.
by Tempus
VS
by Tempus AI, Inc.

AI Verdict

These two tools are adjacent rather than direct competitors, as they both leverage AI for 12-lead ECG analysis within cardiology. Tempus ECG-Low EF focuses on detecting signs associated with low left ventricular ejection fraction to identify heart failure risk in patients 40+, while Tempus ECG-AF identifies patients 65+ at risk of developing atrial fibrillation within 12 months. Therefore, the choice depends on whether the clinical need is to screen for heart failure risk or future AF risk.

Choose Tempus ECG-Low EF if…

Choose Tempus ECG-Low EF if your primary goal is to identify patients aged 40 or older who may currently be at risk for heart failure due to a low left ventricular ejection fraction (LVEF ≤40%). This tool is ideal for aiding clinicians in the early detection and subsequent evaluation of individuals showing signs associated with reduced cardiac pumping efficiency.

View Tempus ECG-Low EF →

Choose Tempus ECG-AF if…

Choose Tempus ECG-AF if you need to proactively identify patients aged 65 or older who are at an increased risk of developing new-onset atrial fibrillation or flutter within the next 12 months. This tool is best suited for supporting earlier identification and follow-up strategies for older adults without pre-existing AF, enabling timely interventions to manage future cardiac rhythm disorders.

View Tempus ECG-AF →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Tempus ECG-Low EF Tempus ECG-AF
Pricing Unknown Contact vendor
Deployment Integrates with current ECG platforms and electronic health records (EHRs). Software solution, integrated into healthcare facility systems with advanced cardiology algorithms.
BAA Available Unknown Yes AI-estimated
FDA Status Cleared AI-estimated Yes AI-estimated
HIPAA Unknown Yes AI-estimated

Head-to-Head

AI-generated assessment across six dimensions based on each tool's documented features and compliance posture. Grounded in public data — not a substitute for hands-on evaluation.

Usability

Tie

Both Tempus ECG-Low EF and Tempus ECG-AF are designed as software solutions that integrate into existing healthcare facility workflows and systems. Neither tool has a dedicated user interface, with input and output handled through standard communication protocols with other medical systems. This indicates a similar approach to usability, focused on seamless backend integration rather than direct user interaction.

Clinical Value

Tempus ECG-Low EF

Tempus ECG-Low EF (Tool A) detects signs associated with low LVEF (u226440%) with reported sensitivity of 85.8% and specificity of 83.0% on an independent validation cohort, aiding in the identification of patients at risk of heart failure. While Tempus ECG-AF (Tool B) predicts the risk of developing atrial fibrillation within 12 months, its reported sensitivity is lower at 31%, despite a high specificity of 92%. Tool A's higher sensitivity and specificity for detecting an existing, critical condition suggest a more robust immediate clinical impact.

Pricing & Value

Tempus ECG-AF

Tempus ECG-AF (Tool B) explicitly states that CMS reimbursement is available, with CPT codes 0764T and 0765T assigned to APC 5734, and a Medicare rate of $128.90 effective January 1, 2025. This transparency regarding reimbursement provides a clear financial value proposition and facilitates adoption for healthcare providers. Tempus ECG-Low EF (Tool A) only indicates 'contact vendor' for pricing, offering no immediate insight into its economic value or reimbursement pathways.

Enterprise Readiness

Tie

Both Tempus ECG-Low EF and Tempus ECG-AF are FDA-cleared, HIPAA compliant, and have Business Associate Agreements (BAAs) in place. Both are deployed as software solutions integrated into healthcare facility systems and workflows. These foundational elements demonstrate equal readiness for enterprise-level deployment and adherence to critical regulatory and operational standards.

Innovation

Tempus ECG-AF

While both tools leverage AI for ECG analysis, Tempus ECG-AF (Tool B) stands out for its innovative application in predicting the *future* onset of atrial fibrillation within 12 months. This predictive capability, trained on a larger dataset of over 1.5 million ECGs, represents a more advanced step in proactive risk identification and preventative care compared to detecting signs of an *existing* condition, even if undiagnosed.

Support & Docs

Tie

The provided structured facts and web search results do not offer specific differentiating information regarding the support or documentation for either Tempus ECG-Low EF or Tempus ECG-AF. As both products are from the same company, Tempus AI, it is reasonable to infer that they would share a common support infrastructure and access to general company documentation.

Feature-by-Feature

Detail beyond the Quick Comparison summary. For pricing, deployment, BAA, FDA, and HIPAA see the Overview tab.

Feature Tempus ECG-Low EF Tempus ECG-AF
Product Name Tempus ECG-Low EF Tempus ECG-AF
Description Tempus ECG-Low EF is an FDA-cleared AI software that analyzes 12-lead ECG recordings to detect signs associated with low left ventricular ejection fraction (LVEF u226440%) in patients 40 years or older at risk of heart failure. It provides a binary output to aid clinicians in further evaluation. Tempus ECG-AF is an FDA-cleared AI-based algorithm that analyzes 12-lead ECG recordings to identify patients aged 65 or older at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months, supporting earlier identification and follow-up.
Target Condition Low Left Ventricular Ejection Fraction (LVEF u226440%) Atrial Fibrillation/Flutter (AF)
Target Patient Population Patients 40 years or older at risk of heart failure Patients aged 65 or older at increased risk of developing AF within the next 12 months, without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery
Output/Detection Binary output (Low LVEF Detected / Not Detected) Identifies patients at increased risk of developing Atrial Fibrillation (AF) within 12 months
Training Data Size (ECGs) Over 930,000 ECGs Over 1.5 million ECGs
CMS Reimbursement Not specified Available (CPT 0764T and CPT 0765T to APC 5734, Medicare rate of $128.90, effective January 1, 2025)

Videos

Demos, reviews, and walkthroughs featuring Tempus ECG-Low EF and Tempus ECG-AF.

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Frequently Asked Questions

Tempus ECG-Low EF is an FDA-cleared AI software designed to analyze 12-lead ECGs to detect signs associated with low left ventricular ejection fraction (LVEF u226440%) in patients 40 years or older at risk of heart failure. In contrast, Tempus ECG-AF is an FDA-cleared AI-based algorithm that analyzes 12-lead ECGs to identify patients aged 65 or older, without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery, who are at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months.
Tempus ECG-Low EF provides a binary output (Low LVEF Detected / Not Detected) to aid clinicians in further evaluation for low LVEF, and is not intended as a standalone diagnostic tool. Tempus ECG-AF identifies patients at increased risk of developing new onset Atrial Fibrillation within 12 months, with results interpreted in conjunction with other diagnostic information and clinical history, and does not represent an AF diagnosis.
Tempus ECG-AF is compatible with FDA authorized resting 12-lead ECGs from GE Medical Systems and Philips Medical Systems. The provided information for Tempus ECG-Low EF does not specify particular compatible ECG systems.
CMS reimbursement is available for Tempus ECG-AF, utilizing CPT 0764T and CPT 0765T to APC 5734, with a Medicare rate of $128.90, effective January 1, 2025. Reimbursement details for Tempus ECG-Low EF are not specified beyond contacting the vendor for pricing.
Tempus ECG-Low EF is intended for patients 40 years or older at risk of heart failure and should not be used on ECGs with paced rhythms or for patients younger than 40. Tempus ECG-AF is specifically for patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery, and should not be used for patients with a history of AF unless it resolved within 30 days of cardiac surgery.
Tempus ECG-Low EF was trained on a dataset of over 930,000 ECGs from more than 170,000 patients. Tempus ECG-AF was trained on a larger dataset comprising over 1.5 million ECGs from over 500,000 patients.

Backers

Who funded each tool's parent company.

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