US Healthcare Professionals Click Here

Straightforward Testing

Reliable Results

24/7 Support

• For help with questions or issues, please contact Customer Support at 1-800-838-9502 24 hours a day, 365 days a year

Easy to Use

• Small blood sample required for testing

• Fingertip, forearm, or palm testing

• Large display with bold numbers

Premium Features

• Accurate results in 10 seconds

• Glucose Oxidase enzyme means no interference from Icodextrin, Maltose, Galactose at normal physiological and therapeutic levels

• 300 test memory with date and time

About On Call® Plus

At its core, the On Call® brand is committed to the health of our customers. Carefully designed for accuracy and reliability, the On Call® Blood Glucose Meter Family has helped millions of patients worldwide effectively manage their glucose levels. The foundation for successfully managing your diabetes starts with your meter. By choosing On Call®, you can rest assured knowing your meter is more than a means to accurate results; it is the cornerstone in your diabetes management.

Product Specs

Learn more about the features and specifications that make On Call® Plus the optimal choice for Diabetes Management.

Learn More


Browse our Resources Library for documents related to the On Call® Plus.

Learn More

Contact Us

Contact ACON Labs for more information about the On Call® Plus.

Learn More

Warranty Registration

Need to register for a 5 year warranty on your On Call® Plus?

Learn More

Store Locator

Want to find On Call® Plus in a store near you?

Learn More

Product Specifications

The On Call® Plus Blood Glucose Monitoring System offers accurate and reliable results backed by 24-7, 365 day customer support.  The smart and powerful data management is compatible with the On Call® AppLink Bluetooth Adaptor and the On Call® Anywhere Diabetes Manager.

Feature Specification
Enzyme Glucose Oxidase
Measurement Range 20-600 mg/dL
Result Calibration Plasma-equivalent
Minimum Sample Size 1 µL
Test Time 10 seconds
Battery Life 1,000 tests
Memory Up to 300 records with date and time
Automatic Shutoff 2 minutes after last action or 5 sec after strip removal
Meter Size 85 x 54 x 20.5 mm
Display Size 35 mm x 32.5 mm
Operating Temperature 41-113˚F (5-45 ˚C)
Operating Relative Humidity 10-90% (non-condensing)
Hematocrit Range 30 – 55%
Alternate Site Testing Fingertip, forearm, or palm


On Call® Plus Glucose Test Strips Insert

Details on the operation of the On Call® Plus Blood Glucose Monitoring System with the On Call® Plus Blood Glucose Test Strips

On Call® Plus User Manual

Guide for operating the On Call® Plus Blood Glucose Meter.

On Call® Plus Glucose Control Solution Insert

Information on the operation of the On Call® Plus Blood Glucose Monitoring System with the On Call® Plus Glucose Control Solution

On Call® Blood Glucose Meter Family

Compare the different On Call® Meters.

On Call® Diabetes Management Software

PC Only. Software download and install (11 MB) for On Call® Diabetes Management Software.

English Only

On Call® Diabetes Management Software User Manual

User Manual for the On Call® Diabetes Management Software (PC Only).

English Only

Contact Us


Customer Support (24/7)



© 2020 ACON Laboratories, Inc. | All Rights Reserved