Frequently Asked Questions
You can eat and drink as per normal.
MeasureUp offers 2 different DEXA body composition appointment types in our Sydney HQ.
All of our DEXA body composition appointments involve patients undergoing a full body DEXA scan where you are lying flat on the DEXA bed whilst a mechanical arm passes over you (fully clothed).
Sydney HQ Clinic:
scanQUICK: We recommend this appointment type for repeat patients or patients that have been referred by health professionals such as Personal Trainers, Dietitians/Nutritionist, Doctors etc . Results from the scan are briefly discussed with the Exercise Physiologist with the main highlighted points being bone density, fat mass, lean mass and any changes from previous DEXA scan appointments. This appointment is typically 15 minutes in length.
scanPLUS: We recommend this appointment type for patients who are new to DEXA or need extra time with the Exercise Physiologist to go further into depth regarding exercise or diet. This appointment is focused on the introduction of what information the DEXA scan provides about your body, and how this information can be utilised to inform your eating and training program. The Exercise Physiologist will also discuss topics such goal setting and advise when it is best to come back and have a follow up DEXA scan. Please note that once you have had a scanPLUS appointment, you can book in for a scanQUICK for your follow up appointments. This appointment is typically 30 minutes in length.
DEXA used a very low dose X-ray and you will only be exposed to 1-4 µSv (microsieverts).
This is less radiation than you will experience on a flight from Sydney to Brisbane. For more detailed information regarding DEXA and radiation please click here.
The time of day will not make a difference to your scan results. Women will also not be affected by their cycle. If you do however wish to reduce your Biological Variability, have a read of the ‘How to I make my Scan as accurate as possible?’ tab below.
Biological variability is the natural variability due to physiologic differences among people over time. In order to increase the accuracy of your DEXA scan, it is best to try and reduce/control your biological variability as much as possible. This way you can compare apples with apples.
How do you do this?
- Have your scan at the same time of day each time (IMPORTANT)
- Mirror your food intake (try and eat the same meal/time) each time you are scanned
- Mirror your exercise (try and do the same exercise-type/time) or no exercise each time you are scanned
- Try and wear the same clothes to each scan
- Try not drink more than 1L of water immediately prior to scan
- If you can, try to go the toilet prior to scan (number 1’s)
If you undertake and standardise all the above, your scan will be more accurate.
One more important element to think about is for those on low carb diets. Low carb diets can effect glycogen storage in your muscles and liver. This will reflect in your DEXA results as a decrease in muscle mass due to the depletion of glycogen in your muscles. Our recommendation is to try and have your scan in the same dietary condition each time as well.
For maximum accuracy, please wear clothing without metal e.g. zippers or buckles. Ideally this means no bra under wires or zippers. Gym and exercise clothes are ideal! If you have metal implants or other metal devices that you cannot remove, don’t worry, The DEXA will work just fine, but you may have slightly higher bone density readings from the scanner interpreting the metal as bone.
DEXA uses a hydration constant of 73% in its calculations. This means that whenever an individual is scanned it sees them with a hydration status of 73%. Hydration status can range from 65-80% depending on the situation – dehydration to hyponatremia (too much water). When you get up in the morning after an overnight fast, voiding and no exercise (or post training) you will be less hydrated than 73% (where the DEXA sees you). As such, your total mass (weight) will be less on the scales compared to the DEXA. This is why it’s important not to compare scale weight with DEXA weight as hydration status may never be exactly the same. The argument for using the DEXA is that it sees you with the same hydration status every time you are scanned which is why it’s used in all international research work when measuring body composition (and changes over time following an intervention – diet and/or exercise).
MOBILE LABS: Body composition scans completed in one of our mobile laboratories will not be claimable through your private health fund.
SYDNEY: You may be able to claim the consult portion of the appointment with your private health fund depending on your individual level of cover. Please check with your provider if you are covered for an ‘Exercise Physiology Consult’. As all appointments are booked and paid for online, we will issue you a health fund receipt after your appointment so you can lodge a claim with your fund.
If you have purchased a scan pack, you will be issued a receipt from reception once you have completed your scan appointment in our HQ.
In most cases, you will not be able to claim through Medicare for a Body Composition scan. If you are having a Bone Mineral Density scan to assess your risk of Osteoporosis you may be eligible for a rebate and will need to discuss this with your Doctor
If there is a possibility that you are pregnant or you are pregnant, we will unfortunately not be able to peform a DEXA scan on you. As there have been no clinical studies into the effects of having a DEXA scan whilst pregnant, we cannot with 100% certainty say that there are no effects on an unborn baby and as such, we will not put anybody at risk.
Having a scan while breastfeeding will not have any adverse effects.
You do not require a referral for a Body Composition scan in ACT, NSW & QLD.
You do require a referral for a Body Composition scan in SA, TAS, VIC & WA.
In some cases, your Doctor may also refer you as part of an Enhanced Primary Care (EPC) Plan.
Yes, we do. All payments are made online when you book your scan. We accept Visa, MasterCard and AMEX.