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MouseSTAT® Pulse Oximeter and Rat & Mouse Heart Rate Monitor Module

Originally designed for use on mice, the MouseSTAT® Pulse Oximeter and Heart Rate Monitor Module can be used effectively on any small animal with the available different sized sensors.  Since the paws of small rodents are typically nude, no shaving or hair removal is required. The module is also ideal for dark-skinned mice, such as C57BL6. MouseSTAT accurately measures pulse oximetry on anesthetized or awake immobile animals with heart rates up to 900bpm.

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Heart Rate Up to 900 bpm
Resolution 1%
SpO2 Range 70 to 100%
Alarms 5, Programmable
Data Export Yes
SpO2 Sensors Soft Touch Paw Sensors (standard)
Large Animal Clip Sensors
Pup Sensors

Features & Benefits

Features & Benefits

Available Mouse Pulse Oximeter Sensors

The MouseSTAT Paw Sensors for mice and rats (SPO2-MSE and SPO2-RAT) were specifically designed for small laboratory animals. They use a miniature LED and light sensor to transmit and receive the red and infrared light that are proportional to the size and translucence of the small laboratory paw.

The larger MouseSTAT Sensor for larger animals (SPO2-LG) is ideal for penetrating thicker tissue, such as that on a rat or larger animal. It can be used on any animal and on any appendage with sufficient vascularization and irrigation. This can be a mouse paw, but more commonly is a rat paw, rabbit ear or small animal tongue.

We also offer a selection of MRI compatible sensors to choose from.

*Respiratory rate accuracy may be influenced be your study protocol. Please feel free to contact one of our product specialists to discuss your specific application.

What Makes Our Sensors Different?

Other mouse pulse oximeters use human-size sensors mechanically adapted for small animals. These adapted human-sized sensors have large LEDs and light sensors that were designed to work on a human index finger or other like appendages. The large LEDs flood a boney appendage such as a finger with a tremendous amount of light, which is mostly absorbed or blocked by the bones and connective tissue. Since only a small amount of light passes through a finger, a large sensor is required to attempt to collect as much of the minute amount of transmitted light as possible.

When the human-sized sensors are attempted to be used on a translucent small laboratory animal paw, there is too much light delivered, which overflows the large light sensor. Therefore, the adapted human pulse oximeter sensors from other manufacturers need to use thick sections of the small laboratory animal body that approximate a human finger, such as the neck or thigh. Placing the sensor in these locations typically requires the extra effort of shaving the area. The higher force spring in the sensor clips may cause ischemia in the sensing area from the continuous squeezing pressure.

Finally, other pulse oximetry systems also require a dedicated external PC to operate, which takes up valuable lab bench and surgical area space.

Select Your MouseSTAT® System

Pulse Oximeter and Rat & Mouse Heart Rate Monitor Module MouseSTAT®

The MouseSTAT module is available as an add-on to the SomnoSuite and PhysioSuite Systems along with a number of other modules as shown below. Choose your system based on your monitoring needs.



  • The Mouse Stat Jr and PhysioSuite are both working seamlessly.

  • I love my SomnoSuite system and use it almost daily!
    I enjoy teaching others here at Purdue about its qualities!

  • What I like SomnoSuite thing that it is a small and light so that it is easy to move anywhere I want.

  • I love the SomnoSuite system, because it is digital, we have absolute control over the delivered anesthetic, it has an intuitive user interface with an easy-to-use touchscreen, it can be enhanced with other functionalities within the same device (e.g. pulse oximetry, CO2 measurements etc.), it can be used with multiple animals at the same time, and many other functions that analog systems do not offer.

    Our lab uses only SomnoSuite, and I propose the system to other colleagues as well.

  • What I like:
    • compact, space saving.
    • can run without gas tank but still have the capability to deliver oxygen or some other gas.
    • has modules to monitor the animal's condition.
    • use a lot less isoflurane compare to the conventional one.
    • no routine calibration needed

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