Why It Is Important To Know Your A1c and Time-In-Range (TIR)

So, your doctor sends you every 3 months for your quarterly A1C blood test. This blood test tells your doctor and you what your average blood sugar levels were for the last 3 months.


Hemoglobin A1c test

“The A1C, since its discovery in the 1960s, is widely accepted as the gold standard for determining blood glucose control over the previous 2–3 months and for assessing risk for diabetes-related microvascular outcomes.”

Do you know what your A1c not tell you? It does not explain the fluctuations in your glucose values throughout the day and night.

Why would you want to know that information? Well, it is extremely important to have that information. If your A1c is high, you know your glucose is on the higher side in general, but you still can have serious, unrecognized low values and would never know it.

On the other hand, if your A1c is low, you are probably having a lot of lows but with no clue what time of day, and be fooled since you are “at goal” with an A1c below 7%.

Time In Range (TIR)

time in range

How TIR helps people with diabetes (PWD)

“The great thing about TIR is its simplicity.

Frank Westermann (one of the founders of the diabetes data platform mySugr)

cgm sensor
cgm sensor

Since CGMs (continuous glucose monitors) have become so popular it is so much easier to keep track of your Time In Range.

PWDs can readily check out their TIR on their CGM software without the need to go to their doctors’ offices. TIR provides you with a shorter “feedback loop”.

As a PWD you know the ‘healthy’ ranges and it’s a simple concept to communicate that you are just as healthy as a normal person when you are within these ranges.

It is also a real-time indicator that you can just look up, rather than having to wait for an A1c result four times a year.

Reference Information

Check out my journal
how I achieved 14 days with 100% time in range.

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