9.3 Blood Sugar Reading to A1c Conversion
Your HbA1c (also known as A1c or glycated haemoglobin) tin give a general judge of your diabetes management, because it provides an average blood glucose level over the past few months.
Dissimilar the finger prick test that you lot exercise for yourself, which are reported as mmol/l, HbA1c is reported as a mmol/mol. For example, if y'all check blood glucose 100 times in a calendar month, and your average event is ten.5 mmol/fifty this would atomic number 82 to an HbA1c of approximately 66 mmol/mol (8.two%), which is above the normal recommended Dainty targets.
What is HbA1c?
Yous should have your HbA1c checked by your healthcare professional person at to the lowest degree in one case a twelvemonth, sometimes more depending on your diabetes. The HbA1c examination measures your boilerplate blood glucose levels by taking a sample of claret. This is and then sent to a lab to analyse the results.
Here's how it works:
Saccharide (or glucose) naturally attaches itself to cells as they motility through your bloodstream. When this happens, the jail cell is considered "glycated". Everyone (whether they have diabetes or not) has glycated claret cells. The more saccharide you take in your blood, the more that sticks to the cells. These are permanent, however every bit red blood cells but last for 4 months new ones are made. That is why your HbA1c can only requite an average of blood glucose over the terminal 2-3 months.
The more glucose in your blood, the higher the pct of glycated HbA1c cells you'll take, and the higher your effect.
How is HbA1c measured?
HbA1c was previously measured in DCCT (Diabetes Command and Complications Trial) units measured in percentage (%) units, but in 2009, changed to the IFCC (International Federation of Clinical Chemistry) unit of millimoles per mol (mmol/mol). This was to make the unit of measure standard worldwideane. This means you lot might see your upshot displayed differently if you have had diabetes for a long fourth dimension, or y'all will see ii results, one in mmol/mol and one in %.
Example HbA1c conversion:
| DCCT measurement (%) | IFCC measurement (mmol/mol) |
| 5.5% | 37 mmol/mol |
| 6.five% | 48 mmol/mol |
| seven.5% | 58 mmol/mol |
| eight.5% | 69 mmol/mol |
| ix.five% | 80 mmol/mol |
What should be my target HbA1c?
You lot should make up one's mind the right target level for you, together with your Healthcare Professional person. This will depend on your type of diabetes therapy, how long you have diabetes and any previous HbA1c results.
According to Dainty guidelines2, if y'all are an adult, have Type 2 diabetes and are on diet and exercise, or medication that doesn't cause hypoglycaemia- your target would exist an HbA1c of 48 mmol/mol (half dozen.5%).
If you are an adult with medication that does cause hypoglycaemia (i.eastward. insulin) your target is an HbA1c of 53 mmol/mol (7%)2. Talk to your Healthcare Professional person most the right goal for y'all.
HbA1c computer
The adding below is provided to illustrate the relationship betwixt HbA1c and average claret glucose levels. This calculation is not meant to replace an actual lab HbA1c result, but to help you improve empathize the relationship between your exam results and your HbA1c. Utilize this information to become more familiar with the relationship between average claret glucose levels and HbA1c.
*The eHbA1c calculated here is just an estimation based on the average blood glucose you have entered. Information technology should not replace the HbA1c bank check carried out by your doctor and the result shown here may differ from the lab value you get. This calculation should not be used to make therapy decisions or changes. You can talk over with your healthcare professional how this approximate measurement could assist you in your overall diabetes management.
Self-monitoring and HbA1c
The HbA1c is important, but it's not a substitute for structured self-monitoring. Only regular claret glucose checks show yous how meals, activeness, medications and stress affect your blood glucose at a single moment in time, as well as over the form of a solar day or week.
Without regular self-checking to provide day-to-day insights, an HbA1c issue can be confusing. Because it gives an average view, a person with frequent highs and lows could have an in-range effect that is the aforementioned equally someone with blood glucose consistently in target range.
This animation shows ii examples of claret glucose variability where the HbA1c would exist the same.
This is why self-monitoring claret glucose levels is valuable. Remember one blood glucose check in isolation volition non tell you the whole story. Getting the results is one thing, but knowing what to practice with them is key. Making the most of your information tin can assistance you to make better decisions, about your health, such every bit dietary choices and insulin doses.
The simply way to get a complete moving-picture show of your blood glucose is by reviewing your day-to-day self-checks forth with your regular HbA1c tests, and working closely with your Healthcare Professional person to interpret the results. Find out more virtually blood glucose monitoring here.
Watch our video on hba1c
Other tools
The free mySugr logbook app is an easy and consummate diabetes tracker for your telephone (iOS and Android).
Read more than
Testing in Pairs is a newspaper tool designed to help you see changes in your claret saccharide earlier and after a specific repast, exercise, or other event.
Read more
- https://www.diabetes.org.united kingdom/about_us/news_landing_page/modify-in-measure...
- https://www.nice.org.uk/guidance/ng28/chapter/1-recommendations
- Nathan DM, Kuenen J, Borg R, Zheng H, Schoenfeld D, Heine RJ. Translating the A1C assay into estimated average glucose values. Diabetes Care. 2008;31(8): 1473-1478. Available at http://intendance.diabetesjournals.org/content/31/viii/1473.full.pdf. Accessed July 28, 2017.
- https://www.diabetes.org.uk/guide-to-diabetes/managing-your-diabetes/hba1c
- Tylee TS, Trence DL. Glycemic variability: looking beyond the A1C. Diabetes Spectrum. 2012;24(3): 149-153. Available at: http://spectrum.diabetesjournals.org/content/25/3/149.full. Accessed July 28, 2017.
Source: https://www.accu-chek.co.uk/tools-and-resources/hba1c-calculator
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