# On Call Glucometers & Test Strips – Plus & Extra Shop **On Call glucometers and blood glucose test strips** from Microsidd India, including the popular **On Call Plus** and **On Call Extra** blood glucose monitoring systems from ACON. This collection brings together compatible On Call meters, test strips, starter kits, higher-quantity strip packs and individually foil-packed strip options for home blood glucose monitoring and professional use. **Important compatibility notice:** **On Call Plus Test Strips are designed for the On Call Plus system.** **On Call Extra Test Strips are designed for the On Call Extra system.** These two strip families should not be treated as interchangeable. If you are unsure which meter or strip you own, read our [**On Call Glucometers & Test Strips Complete Guide**](/blogs/knowledge-hub/on-call-glucometers-test-strips-complete-guide) before ordering. * * * ## Shop On Call Plus Glucometers & Test Strips **On Call Plus** is a well-established ACON blood glucose monitoring system with its own compatible On Call Plus Test Strips. Microsidd currently offers multiple On Call Plus options for individual users, families, clinics and customers requiring larger quantities of test strips. ### On Call Plus Glucometers - [**On Call Plus Glucometer**](/products/oncall-plus-glucometer) – meter-only and selected strip bundle options. - [**On Call Plus Complete Glucometer Kit**](/products/on-call-plus-glucometer-kit) – starter monitoring kit with meter and accessories. - [**On Call Plus Glucometer with 25 Test Strips**](/products/on-call-plus-glucometer-with-25-strips) - [**On Call Plus Glucometer with 50 Test Strips**](/products/oncall-plus-glucometer-kit-with-50-strips) - [**On Call Plus Glucometer with 200 Test Strips**](/products/oncall-plus-glucometer-with-200-strips) ### On Call Plus Test Strips - [**On Call Plus Test Strips 50**](/products/oncall-plus-glucometer-strips-50) – standard 50-strip pack. - [**On Call Plus Test Strips 100**](/products/oncall-plus-glucometer-strips-100) – larger quantity for regular users. - [**On Call Plus Test Strips 200 Hospital Pack**](/products/oncall-plus-glucometer-strips-hospital-pack) – bulk quantity for higher-frequency requirements. - [**On Call Plus Individually Foil-Packed Test Strips 50**](/products/oncall-plus-50-glucometer-strips-foil-pack) - [**On Call Plus Individually Foil-Packed Test Strips 100**](/products/oncall-plus-100-glucometer-strips-foil-pack) For the complete Plus range, visit: [**Shop the On Call Plus Glucometer & Test Strips Collection →**](/collections/on-call-plus-glucometer-strips) * * * ## Shop On Call Extra Glucometers & Test Strips **On Call Extra** is the newer On Call blood glucose monitoring platform and uses its own **On Call Extra Test Strips**. The current Extra system includes features such as a small approximately **0.4 µL blood sample**, results in approximately **4 seconds**, no routine manual coding and the ability to apply additional blood within the manufacturer's permitted re-dosing window when required. ### On Call Extra Glucometer [**On Call Extra Blood Glucose Monitoring System →**](/products/oncall-extra-glucometer) ### On Call Extra Test Strips - [**On Call Extra Test Strips 50**](/products/oncall-extra-glucometer-strips) - [**On Call Extra Test Strips 100**](/products/oncall-extra-glucometer-strips-100) - [**On Call Extra Individually Foil-Packed Test Strips**](/products/on-call-extra-glucometer-foiled-test-strips) For the complete Extra range, visit: [**Shop the On Call Extra Glucometer & Test Strips Collection →**](/collections/on-call-extra-glucometer-strips) * * * ## On Call Plus vs On Call Extra: Which System Do You Have? The words **Plus** and **Extra** are important when purchasing replacement strips. Meter Compatible Strip Family On Call Plus On Call Plus Test Strips On Call Extra On Call Extra Test Strips Do not choose replacement strips merely because both products carry the **On Call** brand name. Check the model name printed on your meter and strip packaging before ordering. For a detailed feature and compatibility comparison, read: [**On Call Plus vs On Call Extra Glucometer: Complete Comparison →**](/blogs/knowledge-hub/on-call-plus-vs-on-call-extra-glucometer) * * * ## On Call Plus Test Strip Compatibility On Call Plus Test Strips should be purchased for compatible **On Call Plus** blood glucose meters. They should not be substituted with On Call Extra strips simply because the strip packs are manufactured within the same On Call brand family. If you are uncertain about your meter, read: [**On Call Plus Test Strip Compatibility Guide →**](/blogs/knowledge-hub/on-call-plus-test-strips-compatibility-guide) * * * ## On Call Extra Test Strip Compatibility On Call Extra uses the **On Call Extra Test Strip system**. Always verify the words **On Call Extra** on your meter before purchasing replacement strips. Read: [**On Call Extra Test Strip Compatibility Guide →**](/blogs/knowledge-hub/on-call-extra-test-strips-compatibility-guide) * * * ## On Call Plus vs Extra: Key Differences Both are On Call blood glucose monitoring systems, but they represent different product generations and should not be treated as one identical system. Feature On Call Plus On Call Extra Compatible strips On Call Plus Test Strips On Call Extra Test Strips Approx. sample size Approx. 1 µL Approx. 0.4 µL Approx. result time Approx. 10 seconds Approx. 4 seconds Coding system Older Plus system uses code-chip based setup No routine manual coding Stored results Up to approximately 300 Up to approximately 500 Re-dosing capability Refer to Plus instructions Supported within the manufacturer's specified re-dosing window For a detailed explanation of these differences, visit: [**Compare On Call Plus vs On Call Extra →**](/blogs/knowledge-hub/on-call-plus-vs-on-call-extra-glucometer) * * * ## On Call Plus Error Codes & Troubleshooting If your On Call Plus meter displays an error such as **E0, E1, E2, E3, E4, E5, E6**, a temperature warning, code-chip warning or another unexpected message, do not repeatedly waste test strips without first checking the cause. Use our dedicated model-specific troubleshooting guide: [**On Call Plus Error Codes & Troubleshooting Guide →**](/blogs/knowledge-hub/on-call-plus-error-codes-troubleshooting-guide) The guide explains common strip, sample, battery, temperature and code-chip problems and when a fresh test strip or control check may be appropriate. * * * ## On Call Extra Error Codes & Troubleshooting On Call Extra has its own troubleshooting logic and should not automatically be diagnosed using On Call Plus error-code instructions. For Extra-specific messages including **E0, E1, E2, E5, E6, HI/LO and strip/sample problems**, visit: [**On Call Extra Error Codes & Troubleshooting Guide →**](/blogs/knowledge-hub/on-call-extra-error-codes-troubleshooting-guide) * * * ## How to Use On Call Glucometers Correct strip insertion, hand preparation, blood sampling and sample application are important for reliable operation of a glucose monitoring system. Choose the guide for your meter: - [**How to Use On Call Plus Glucometer & Test Strips →**](/blogs/knowledge-hub/how-to-use-on-call-plus-glucometer-test-strips) - [**How to Use On Call Extra Glucometer & Test Strips →**](/blogs/knowledge-hub/how-to-use-on-call-extra-glucometer-test-strips) * * * ## On Call Test Strip Expiry & Storage Always check the expiry information printed on the manufacturer packaging and follow the storage instructions supplied with your specific strip system. Keep unused strips in the packaging or container specified by the manufacturer and protect them from unsuitable heat, humidity and contamination. - [**On Call Plus Test Strips Expiry & Storage Guide →**](/blogs/knowledge-hub/on-call-plus-test-strips-expiry-storage-guide) - [**On Call Extra Test Strips Expiry & Storage Guide →**](/blogs/knowledge-hub/on-call-extra-test-strips-expiry-storage-guide) * * * ## Understanding the On Call Plus Code Chip Customers using On Call Plus may encounter questions about the meter's code-chip system, coding errors or replacement-strip setup. We have a dedicated guide explaining how the Plus coding system works: [**On Call Plus Code Chip & Coding Guide →**](/blogs/knowledge-hub/on-call-plus-code-chip-coding-guide) * * * ## On Call Extra Re-Dosing One of the useful features of the current On Call Extra system is the ability, under the manufacturer's specified conditions, to add additional blood shortly after an insufficient first application. This should not be confused with unlimited re-sampling or repeatedly adding blood after a test has already progressed. Read: [**On Call Extra Re-Dosing & Second Blood Sample Guide →**](/blogs/knowledge-hub/on-call-extra-redosing-second-blood-sample-guide) * * * ## On Call Plus 50 vs 200 Test Strips Customers who use On Call Plus regularly may choose between smaller consumer quantities and larger-value packs. Before purchasing a larger quantity, consider your expected usage, current batch expiry and storage requirements. Read: [**On Call Plus Test Strips 50 vs 200 Pack Guide →**](/blogs/knowledge-hub/on-call-plus-strips-50-vs-200) * * * ## Complete On Call Knowledge Guides For deeper product information, use the Microsidd Knowledge Hub: - [**On Call Glucometers & Test Strips Complete Guide**](/blogs/knowledge-hub/on-call-glucometers-test-strips-complete-guide) - [**On Call Plus Glucometer & Test Strips Complete Guide**](/blogs/knowledge-hub/on-call-plus-glucometer-test-strips-complete-guide) - [**On Call Extra Glucometer & Test Strips Complete Guide**](/blogs/knowledge-hub/on-call-extra-glucometer-test-strips-complete-guide) - [**On Call Plus vs On Call Extra Comparison**](/blogs/knowledge-hub/on-call-plus-vs-on-call-extra-glucometer) * * * ## Why Buy On Call Products from Microsidd? Microsidd India supplies blood glucose monitoring products to individual customers, healthcare professionals, clinics and laboratories across India. - Genuine On Call / ACON products from established supply channels - Multiple meter, strip and bulk-pack options - Competitive online pricing - Delivery across India - Fast fulfilment to major cities where serviceability permits - GST invoice available where applicable - Product compatibility information before purchase - Dedicated Knowledge Hub guides for setup and troubleshooting Customers in Bengaluru can also find Microsidd India at **RT Nagar, Bengaluru**. [**View Microsidd India Bengaluru location information →**](/pages/microsidd-india-bangalore) * * * ## Frequently Asked Questions ### Are On Call Plus and On Call Extra test strips the same? No. On Call Plus and On Call Extra are separate blood glucose monitoring systems and use their respective compatible strip families. ### Can On Call Plus strips be used in On Call Extra? No. Purchase On Call Extra Test Strips for the On Call Extra meter. ### Can On Call Extra strips be used in On Call Plus? No. The On Call Plus meter requires compatible On Call Plus Test Strips. ### Which On Call system gives results faster? The current On Call Extra system is specified at approximately 4 seconds, while the On Call Plus system is approximately 10 seconds. ### Does On Call Extra require a code chip? The current On Call Extra system does not require routine manual coding. ### Does On Call Plus use a code chip? The traditional On Call Plus system uses a coding/code-chip system. Refer to the instructions supplied with your meter and test-strip pack. ### What should I do if my On Call meter shows an E1 or E2 error? Use the troubleshooting guide for your exact meter model because the meaning and recommended action can differ between Plus and Extra. ### Where can I buy On Call Plus Test Strips? Microsidd stocks multiple On Call Plus strip quantities including standard, bulk and selected foil-pack configurations, subject to current availability. ### Where can I buy On Call Extra Test Strips? Visit the On Call Extra collection at Microsidd to view current 50-strip, 100-strip and foil-pack availability. * * * **Medical information notice:** The information on this page is intended to help customers understand product compatibility, features and purchasing options. It does not interpret blood glucose readings or replace medical advice. Follow the instructions supplied with your meter and test strips and consult a qualified healthcare professional regarding testing frequency, glucose targets or treatment decisions. * * * ## On Call GK Dual Glucose & Ketone Monitoring System The **On Call GK Dual** is different from the standard On Call Plus and On Call Extra glucose meters because it is designed to measure both **blood glucose** and **blood β-ketones** using compatible test-strip systems. According to ACON, the GK Dual can use compatible **On Call Chosen** or **On Call Advanced** test strips for blood glucose testing, while **On Call Blood Ketone Test Strips** are used for β-ketone testing. Typical GK Dual specifications include approximately **5-second glucose results**, **10-second ketone results**, a glucose sample of approximately **0.8 µL**, a ketone sample of approximately **1.2 µL**, and storage for up to approximately **450 glucose and ketone results**. ### Shop On Call GK Dual - [**On Call GK Dual Blood Glucose & Ketone Monitor →**](/products/ketone-monitor) - [**On Call Blood Ketone Test Strips 25's →**](/products/ketone-monitor-strips) For detailed setup, compatibility and troubleshooting information, read: - [**On Call GK Dual Glucose & Ketone Monitor Complete Guide**](/blogs/knowledge-hub/on-call-gk-dual-glucose-ketone-monitor-complete-guide) - [**On Call GK Dual Strip Compatibility Guide**](/blogs/knowledge-hub/on-call-gk-dual-strip-compatibility-guide) - [**On Call GK Dual Error Codes & Troubleshooting Guide**](/blogs/knowledge-hub/on-call-gk-dual-error-codes-troubleshooting-guide) ## Products in this collection - [On Call Plus Blood Glucose Test Strips 50 Strips | Compatible with On Call Plus Glucometers](https://microsidd.com/products/oncall-plus-glucometer-strips-50) - 249.0 INR - [Oncall Plus Glucometer](https://microsidd.com/products/oncall-plus-glucometer) - 349.0 INR - [Microsidd Microlance 100R Universal Round Blue Lancets | 100 Sterile Blood Lancets for Glucometers | Compatible with Dr. Morepen, On Call, SD CodeFree, Gluneo & More](https://microsidd.com/products/microlance-100r-universal-round-blue-glucometer-lancets-100) - 99.0 INR - [On Call Extra Blood Glucose Test Strips 50's Pack Genuine ACON Test Strips for On Call Extra Glucometer](https://microsidd.com/products/oncall-extra-glucometer-strips) - 549.0 INR - [On call Plus Glucometer Strips hospital pack](https://microsidd.com/products/on-call-plus-glucometer-strips-hospital-pack) - 899.0 INR - [On Call Blood Ketone Test Strips 25's | For On Call GK Dual Ketone Monitor](https://microsidd.com/products/ketone-monitor-strips) - 2749.0 INR - [On Call Plus Glucometer Test Strips Foil Pack 50's | Individually Foil Wrapped Blood Glucose Test Strips | Compatible with On Call Plus Glucometer](https://microsidd.com/products/oncall-plus-50-glucometer-strips-foil-pack) - 399.0 INR - [Glucometer Lancing Device Microsidd](https://microsidd.com/products/glucometer-lancing-device-microsidd) - 99.0 INR - [On Call Plus Blood Glucose Monitoring System with 10 Free Test Strips | Genuine ACON Blood Sugar Glucometer | Buy Online from Microsidd](https://microsidd.com/products/oncall-plus-glucometer-with-10-free-strips) - 549.0 INR - [On Call Ketone Monitor – Blood Ketone & Glucose Monitoring System | GK Dual](https://microsidd.com/products/ketone-monitor) - 2499.0 INR - [On Call Plus Blood Glucose Test Strips 200's Hospital Pack | Genuine ACON Test Strips for On Call Plus Glucometer | Bulk Pack Online at Microsidd](https://microsidd.com/products/oncall-plus-glucometer-strips-hospital-pack) - 899.0 INR - [On Call Plus Glucometer Kit by On-Call | Blood Glucose Monitoring System with 10 Test Strips, 10 Lancets & Lancing Device](https://microsidd.com/products/on-call-plus-glucometer-kit) - 549.0 INR - [On Call Extra Blood Glucose Test Strips](https://microsidd.com/products/on-call-extra-blood-glucose-test-strips) - 549.0 INR - [On Call Extra Blood Glucose Monitoring System (Glucometer Kit) | Blood Sugar Test Machine with Meter, Lancing Device, 10 Lancets, Carry Case & User Manual | Fast & Accurate Blood Glucose Monitoring for Home Use](https://microsidd.com/products/oncall-extra-glucometer) - 599.0 INR - [Oncall Plus Glucometer Strips 10 pack](https://microsidd.com/products/oncall-plus-glucometer-strips-10-pack) - 75.0 INR - [On Call Plus Glucometer with 50 Test Strips | Blood Glucose Monitoring Kit Combo | ACON](https://microsidd.com/products/oncall-plus-glucometer-kit-with-50-strips) - 749.0 INR - [Oncall Plus 100 Glucometer Strips Foil Pack](https://microsidd.com/products/oncall-plus-100-glucometer-strips-foil-pack) - 799.0 INR - [Oncall Extra Glucometer Strips 100](https://microsidd.com/products/oncall-extra-glucometer-strips-100) - 1099.0 INR - [On call plus Blood Glucose Meter with 25 strips](https://microsidd.com/products/on-call-plus-glucometer-with-25-strips) - 699.0 INR - [On Call Plus Glucometer Strips 50x2](https://microsidd.com/products/on-call-plus-glucometer-strips-50x2) - 499.0 INR - [Oncall Plus Glucometer with 200 Strips](https://microsidd.com/products/oncall-plus-glucometer-with-200-strips) - 1499.0 INR - [On Call Extra Glucometer Foiled Test Strips](https://microsidd.com/products/on-call-extra-glucometer-foiled-test-strips) - 599.0 INR - [On Call Extra Blood Glucose Monitoring System with 10 Free Test Strips](https://microsidd.com/products/oncall-extra-glucometer-with-25-strips) - 599.0 INR - [Oncall Plus Glucometer Strips 100](https://microsidd.com/products/oncall-plus-glucometer-strips-100) - 499.0 INR - [Oncall Extra Glucometer without Strips](https://microsidd.com/products/oncall-extra-glucometer-without-strips) - 499.0 INR --- > Source: [Microsidd India](https://microsidd.com/collections/on-call-glucometer-test-strips) > Updated: 2026-09-24