Secondhand Hemosense INRatio 2 Blood Coagulation (PT/INR) Meter

Objective AI Report

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Report date: 06.01.2026

HemoSense INRatio 2 PT Monitoring System Analysis Report

Device Identification

The device analyzed in the visuals is a portable, handheld medical measuring device designed to measure blood clotting time (PT/INR). The device is a diagnostic unit that falls into the point-of-care testing (POCT) category.

Brand and Model

Based on the logos and label information on the product, the device’s brand is HemoSense and its model is INRatio 2. The full model description on the label on the back of the device is “INRatio®2 PT Monitoring System”. Additionally, the “inratio 2” logo is clearly visible in blue and orange colors on the front panel.

Authenticity

The brand logos, font styles, corporate labels on the back (HemoSense, San Jose, CA address, patent information, and certification marks), and material quality of the device indicate that the product is an original HemoSense production.

Areas of Use

This device is used to monitor Prothrombin Time (PT) and International Normalized Ratio (INR) values in individuals undergoing oral anticoagulant therapy (e.g., patients using Warfarin/Coumadin). It is designed for hospitals, clinics, and home patient monitoring.

Quantity Information

The following parts have been identified in the visuals:

• 1 INRatio 2 measuring device.
• 1 battery cover (attached to or next to the device).
• 4 AA-sized batteries.

Note: No carrying case, test strip, lancet, or external power adapter is visible in the visuals.

Overall Condition

The device generally appears clean and its integrity is preserved. No yellowing or heavy soiling is noticeable on its outer casing. It gives the impression of being second-hand but well-maintained or lightly used.

Physical Deformations and Screen Analysis

No significant cracks or breakages have been detected on the device’s outer casing (white plastic sections). However, the following points should be noted regarding the screen:

• Screen Surface: Especially in visuals taken from angles where the device receives light, superficial scratches and circular wiping marks (hairline scratches) due to use are observed on the screen protector glass. While this does not hinder the readability of the screen, it is a cosmetic wear.
• Screen Function: The device’s LCD screen is in working condition. Numbers and symbols are displayed clearly, without any signs of dead pixels or breakage.

Mechanical and Electronic Components

The device’s physical button set (orange directional and OK button group) is in place, and no wear is visible. No broken tabs are observed on the battery compartment cover, and it can be assumed to fit snugly into the slot.

There is clear evidence in the visuals that the device is electronically functional. The device has been turned on and displayed measurement data on the screen.

Battery and Power Status

The device’s battery compartment contains 4 AFORCE brand Alkaline batteries. No leakage, corrosion, or oxidation at contact points is observed on the batteries in the visuals. The battery compartment springs and contact metals are clean.

Label Information

The data obtained from the label on the back surface of the device are as follows:

• Serial Number (SN): 091646078
• Manufacturer: HemoSense®, San Jose, CA 95134 USA
• Warning: “Use only with INRatio Power Supply p/n 0100011 or p/n 0100260”
• Certifications: UL Classified, CE 0197, In Vitro Diagnostic Use Only
• Contact: www.hemosense.com

On-Screen Data Analysis

Different menus and results are visible on the screen when it is active in the visuals:

• Measurement Result Screen: In one visual, a “2.4 INR” result is displayed. The date “28/02/16” and time “16:10” are visible at the bottom. This date may indicate that the device’s internal clock is set to an old date or that it is showing a measurement performed on that date from memory. Additionally, “10.7 QC1” and “19.5 QC2” quality control values are readable at the bottom.
• Test Alert: In one visual, there is a flashing arrow icon and a strip slot illustration indicating that the test strip should be inserted into the device.
• Menu/Target Screen: In another visual, a target-like icon and “OK?” text, along with “M” (presumably Memory) button functions, are visible.

Current Faults and Potential Risks

There is no indication in the visuals that the device is displaying an “Error” code. The screen turns on, and navigation between menus is possible (as understood from different screen captures).

Potential Risk: The date 2016 displayed on the device’s screen suggests that the device has not been used for a long time or that the date settings have been reset. This situation may indicate that the device might require calibration with current test strips or that its internal clock battery (if any) needs to be checked.

Manufacturing and Usage Period

The exact year of manufacture is not specified on the label. However, the 2016 date on the screen indicates that the device was actively in use at least until this date. The design of the “UL” and “CE” markings on the label gives a general impression that the device might have been manufactured between 2010 and 2015.