Dexcom G4 Platinum®

The Dexcom G4® PLATINUM continuous glucose monitoring (CGM) system measures your interstitial glucose levels 24 hours a day to reveal a complete view of glucose highs, lows and rates of change over time. Unlike finger sticks that give a number for a single point in time, CGM provides dynamic glucose information by showing you, every 5 minutes, where your glucose is, where it’s going and how fast it’s getting there.


NOTE: Video footage shows Dexcom G4 PLATINUM in mg/dl. Dexcom G4 PLATINUM only available in mmol/L in New Zealand. Receiver only available in black.

Customised alarms.

Set your blood glucose target range to alert when you go high or low and even customise alarm tones and melodies to suit your needs. The Dexcom G4 PLATINUM has a fixed hypo alert at 3.1mmol/l to give you added peace of mind even while you’re sleeping.

Tiny sensor needle.

The sensor introducer needle has a gauge of 26G and a length of 14.6mm. The Dexcom G4 PLATINUM is approved for sensor placement on either the abdomen area or upper gluteus area for paediatric users.1

6 metre transmission range.

The Dexcom G4 PLATINUM receiver and transmitter have a transmission range of up to 6m for flexibility and convenience. The Animas® Vibe insulin pump and the transmitter have a range of 3.6m.

Colour Screen.

View your glucose trends in vivid hues of yellow, red, and white on the receiver and you’ll see quickly and easily when you’re going high, low, or good to go. The Animas Vibe insulin pump also comes with a colour screen.

Sleek Profile.

At less than 1.27cm thick, the Dexcom G4 PLATINUM receiver is sleek and small and slips easily into your pocket or purse. It’s designed to fit any busy lifestyle.

7 day sensor life.

The Dexcom G4 PLATINUM sensor’s life is approved for 7 day’s continuous use for your convenience.


References: 1. Dexcom G4 PLATINUM User Guide, May 2012

How it works

NOTE: Video footage shows Dexcom G4 PLATINUM  in mg/dl. Dexcom G4 PLATINUM only available in mmol/L in New Zealand.  Receiver only available in black.

The Dexcom G4 PLATINUM CGM system can be used as a standalone system or with the Animas® Vibe™ insulin pump. Here’s how it works: 

  1. A tiny sensor is placed under the skin in a similar way to an infusion site and is worn up to 7 days at a time. After you have been trained under the supervision of your healthcare professional and NZMS Diabetes representative, you can do this on your own.
  2. The Dexcom G4 PLATINUM transmitter is then attached to the sensor.
  3. Once the sensor is inserted and the transmitter is attached there is a two hour start-up period where no information will be displayed. After this time, you will need to enter two finger stick readings from your blood glucose meter to calibrate the Dexcom system.
  4. The glucose sensor will then continuously measure your interstitial glucose levels (in the fluid space between the cells) and through the transmitter, will send information wirelessly to either your Dexcom Receiver or your Animas™ Vibe® insulin pump.
  5. After the two initial calibrations, further calibrations are required every 12 hours.


Dexcom G4 Sensor

Displayed Glucose Range 2.2-22.2mmol/L
Sensor Life Indicated for up to 7 days continuous use
Calibration Finger stick test with commercially available BG meter
Calibration Range 2.2-22.2mmol/L
Storage Conditions Temperature: 2° C – 25° C Humidity: 0% – 95% RH

Dexcom G4 Transmitter

Dimensions (Including sensor pod) Length: 3.8cm Width: 2.3cm Thickness: 1.3cm Weight: 10:0g
Communication Range 6m from Dexcom Receiver3.6m from Animas Vibe insulin pump
Power Supply Receiver is charged by USB cable/power plug
Storage Conditions: Temperature: 0° C – 45° C Humidity: 10%-95%RH
Warranty 6 months
Liquid Ingress Protection IP28 24hours at 2.4m
Frequency Range 2.424 999 877 GHz
2.449 993 677 GHz
2.474 737 539 GHz
2.477 236 919 GHzApproved by Air New Zealand for use during flight, including take-off and landing, for all Air New Zealand flights.

Dexcom G4 Receiver

Communication Range 6m from Transmitter
Memory Storage:i. 30 days of glucose dataii. 7 days of tech support data 6m from Transmitter7 days of tech support data
Software for download Dexcom Studio
Rechargeable Battery use 3 days
Charging Time 3 Hours Power Outlet 5 Hours Powered USB
Moisture Protection IP22: vertically falling drops
Warranty* 1 Year


Frequently Asked Questions

How does Dexcom measure my glucose levels?

A small sensor continuously measures glucose in the interstitial fluid (the fluid space between the cells) and sends this information via a transmitter to a Dexcom receiver or Animas Vibe insulin pump.

What is the sensor adhesive made of?

It is a pressure sensitive acrylic adhesive coated on top of a polyester spun lace fabric. The housing is attached with cyanoacrylate glue from Loctite. Both are medical grade materials. There is no latex or bovine components in the adhesive.

How accurate is my Sensor?

Your sensor glucose readings are meant to be used for trending only. Your blood glucose meter and sensor measure your glucose from two different types of body fluids: blood and interstitial fluid. Therefore, the values from your blood glucose meter and sensor may not match exactly.  For finger stick BG values below 4.44mmol/L, the CGM reading may be up to 1.11mol/L different and still be considered accurate. For finger stick BG values at or above 4.44mol/L, the CGM reading may be up to 20% different and still be considered accurate.

How long does the transmitter last?

The Transmitter battery will last at least six (6) months. However, once you see the transmitter low battery screen, replace the transmitter as soon as possible. Your transmitter battery may drain as quickly as one week or less after this alert appears. The Transmitter has  a warranty of 6 months.

How long can I wear a sensor for?

A single sensor is approved for up to 7 days continuous use.

Do I still need to take blood tests?

Yes you do. Finger stick readings should always be used for treatment decisions.

Is the device implanted permanently under the skin?

No it is not. A very fine sensor is placed under the skin and can be worn continuously for up to 7 days at a time.

Is it waterproof?

The Receiver is not water resistant however the Dexcom Transmitter and Sensor are water resistant up to 2.4m for 24 hours.

How to purchase


  • The Dexcom continuous glucose monitoring (CGM) system is not funded by PHARMAC and may be purchased directly from NZMS Diabetes.
  • Discuss with your healthcare professional to see if the continuous glucose monitoring system would benefit you.
  • Contact us for more info.


For Health Care Professionals

This section contains information specially for Health Care Professionals such as clinical papers, order forms and checklists.

*Health fund forms may not be up to date. AMSL Diabetes is no liable for the use of these forms and customers should consult their health funds for further information.

Dexcom Studio

With Dexcom’s latest software, you can download the Dexcom G4 PLATINUM CGM in seconds, access reports for insights, and print the charts at the touch of a button. All this with a more streamline interface. For customers using the Animas® Vibe™ insulin pump, you can download your pump using the Diasend software. Click here to view more information about Diasend.

Download Dexcom Studio


Dexcom PORTRAIT Report

A new summary report that says it all This one page report helps to easily and quickly:

  1. Identify clinically significant patterns with the Pattern Map
  2. Prioritise which glucose patterns to address with the Pattern Map
  3. Focus on potentially the most significant patterns with Insight Summary
  4. Provide possible solutions to improve glucose management with Possible Considerations and Interpretation section


Pattern Map

Frequency + Duration + Intensity = Clinical Significance. The longer and wider the red or yellow highlighted areas is, the more clinically significant the glycaemic excursion may be.


Insights and Potential Solutions

Highlights the most significant pattern of hyper- and hypoglycaemia throughout daytime and night-time and frequency of occurrence. In addition, possible clinical considerations to help resolve glycaemic excursions.


Summary Statistics and Interpretation

Quick snapshot of glucose statistics and calibration frequency as well as a place for written therapy adjustments and suggestions to help improve glucose control.


Hourly Stats Report

All-in-one report to easily assess glycaemic patterns and variability at the same time.


Daily Trends Report

Overlapping days to assess glycaemic patterns.


Glucose Distribution Report

Shows percent time high, low and in target glucose ranges and overall glucose distribution. Assess pre- and post-prandial control by comparing pie chart distribution.


Glucose Trends Report

Report to review daily glucose trends, event markers and correlation between SMBG and CGM. Daily Strip Print feature prints daily glucose trends with a touch of a button.


Daily Stats Report

Review percent time spent high, low and in target glucose ranges by day.


Success Report

Compares glycaemic control weekly, monthly or quarterly.

Stay informed with NZMS

Now you can get all the latest news and updates of our products, events and resources right into your inbox.