i-STAT PTplus Cartridge
In Stock
Product code: I-STAT-03P89-50
MPN: 03P89-50
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High-precision prothrombin time and INR for anticoagulant therapy monitoring
Product overview
The i-STAT PTplus cartridge provides highly precise, lab-quality prothrombin time and INR results in approximately 5 minutes. It measures the clot time of the extrinsic coagulation pathway when activated by thromboplastin in non-anticoagulated whole blood. The cartridge supports both fingerstick capillary and venous sample collection. Compared to the previous generation PT/INR test, the PTplus offers a wider clinical range (0.8 to 8.0 INR versus the older 0.9 to 6.0 INR range), improved precision (2.4% CV versus 4.7% CV at therapeutic levels), and broadened indications to include monitoring of all coumarin derivative anticoagulants.
Expand your point-of-care testing capacity with refurbished i-STAT analyzers
If your facility relies on the Abbott i-STAT system for point-of-care testing, Block Scientific can help you increase your testing capacity at a fraction of the cost of buying new. The Abbott i-STAT is one of Block Scientific's Centers of Excellence analyzers, which means we carry deep inventory, provide factory-level refurbishment, and back every unit with comprehensive service and support.
Adding refurbished i-STAT 1 or i-STAT Alinity instruments to your fleet lets you deploy more analyzers across departments, satellite locations, or mobile units without the capital outlay of purchasing new. Every refurbished i-STAT from Block Scientific is thoroughly tested, calibrated, and verified to meet original manufacturer specifications before it ships.
And when you bundle your cartridge and consumable orders with refurbished instrumentation, you get the best possible pricing on both. Complete the form on this page and your local sales rep will contact you to discuss your application.
Clinical evidence
In method comparison studies, the i-STAT PTplus demonstrated strong correlation with central laboratory PT/INR methods, achieving correlation coefficients of r = 0.92 for capillary samples and r = 0.91 for venous samples. The improved precision at 2.4% CV (compared to 4.7% CV on the previous generation) means tighter confidence intervals around each INR result, which translates directly to more reliable dosing decisions. The wider reportable range of 0.8 to 8.0 INR (versus the previous 0.9 to 6.0) also means fewer out-of-range results for patients on higher-intensity anticoagulation regimens.
Clinical applications
Used to monitor patients receiving anticoagulant therapy with coumarin derivatives (such as warfarin and other coumarin-based agents). The rapid turnaround enables real-time dosing decisions during patient visits, reducing the need for follow-up calls and repeat visits. Suitable for anticoagulation clinics, emergency departments, pre-surgical screening, and any setting where timely PT/INR results drive care decisions.
What does the i-STAT PTplus Cartridge measure?
Category: Coagulation
- PTplus (Prothrombin Time / INR)
Specifications
Intended use
Intended for use in the in vitro quantitative measurement of the clot time of the extrinsic coagulation pathway when activated by thromboplastin in non-anticoagulated whole blood (venous or capillary). Used to aid in the monitoring of patients receiving anticoagulant therapy with coumarin derivatives.
Frequently Asked Questions
Yes. The PTplus cartridge accepts both fingerstick capillary samples and venous whole blood. The 20 uL sample volume is small enough for a simple fingerstick collection.
The PTplus provides lab-quality results in about 5 minutes at the point of care, versus the typical 30-60+ minute turnaround from a central lab. This allows clinicians to make dosing decisions during the same patient visit.
Yes. The i-STAT PTplus test is for prescription use only and is intended for use by healthcare professionals.
The Abbott i-STAT is a Block Scientific center of excellence
Block Scientific has designated the Abbott i-STAT as one of its Centers of Excellence - a select group of analyzer platforms where we provide the highest level of expertise, inventory depth, and service capability. When you purchase a refurbished i-STAT from Block Scientific, you get the benefit of more than 45 years of laboratory equipment experience, dedicated technical support, and a team that knows the i-STAT platform inside and out.
Whether you need a single replacement unit, want to expand your POC testing footprint across multiple departments, or are looking for the best price on cartridges and consumables, Block Scientific is the partner that can make it happen at a cost that works for your budget.
Ready to get started?
Complete the form on this page and your local sales rep will contact you to discuss your application. Whether you are ordering cartridges, looking at refurbished i-STAT analyzers, or want to bundle both for the best pricing, we are here to help.
