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Pronto — with rainbow® technology — for noninvasive and quick spot-checking of total hemoglobin (SpHb), oxygen saturation (SpO2), pulse rate (PR), and perfusion index (PI)

Your Solution for Total Hemoglobin Spot-checking

Nurse checking patient with Masimo Pronto

The Pronto may provide the following benefits:

  • > Facilitates timely patient assessment
  • > Easy-to-use
  • > Expands information available to your clinician at time of assessment

Four Simple Steps

measuring patient's finger to determine correct Masimo Pronto-7 sensor size

Select sensor size

placing noninvasive Masimo Pronto-7 sensor on patient's finger

Place sensor on finger

Press SpHb button

performing a spot-check with the Masimo Pronto

Obtain results

reading SpHb spot-check results with the Masimo Pronto

SpHb Performance

chart comparing SpHb from Masimo Pronto-7 versus invasive tHb measurements from a laboratory reference device

In 492 comparisons of SpHb and invasive hemoglobin (tHb) measurements from a laboratory CO-Oximeter, SpHb accuracy was as follows*:

  • 0.08 g/dL bias
  • 0.96 g/dL ARMS accuracy
  • Below 12 g/dL, 99% of SpHb readings were <2 g/dL of the laboratory tHb value
  • At or above 12 g/dL, 94% of SpHb readings were <2 g/dL of the laboratory tHb value

*Masimo FDA Submission Data (Accuracy of Noninvasive Total Hemoglobin (SpHb) Measurement with Pulse CO-Oximetry). The study was performed in compliance with the requirements of IS09919:(2005) Standard.

Please note: These results were obtained following a specific protocol, in which all Directions for Use were followed and SpHb measurements were compared to validated laboratory reference measurements. Differences in results may be caused by many factors, such as those explained in Masimo’s Directions for Use. Some independent researchers have conducted their own testing and obtained similar results, while other researchers have reported larger differences when comparing SpHb measurements to laboratory measurements.



Prior to using this device, the user should read and understand the Operator’s Manual and Directions for Use. Laboratory diagnostic tests using blood samples should be conducted prior to clinical decision making to completely understand the patient’s condition. Comparisons between SpHb measurements and laboratory diagnostic hemoglobin measurements may be affected by sample type, collection technique, physiological, and other factors

Caution: Federal law restricts this device to sale by or on the order of a physician.

Transcutaneous measurement of methemoglobin is intended to supplement, not replace laboratory testing. Blood samples should be analyzed by laboratory instruments prior to clinical decision making.