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Using Beer's Law to Calculate Glucose Concentrations

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I have a series of protein free patient blood samples at time; 0, 30, 60, 90, 120, 180 mins. I also have a standard sample. I have measured the absorbance of these samples; 0.655, 0.717, 0.689, 0.430, 0.852, 0.477 respectively. Standard sample 0.760 The glucose concentration in the standard test tube is 0.278 mmole/L. Using Beers Law, how do i calculate the glucose concentrations each of the timed samples?

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Glucose concentrations are calculated using Beer's Law. Full working is shown.

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I have a series of protein free patient blood samples at time; 0, 30, 60, 90, 120, 180 mins. I also have a standard sample. I have measured the absorbance of these samples; 0.655, 0.717, 0.689, 0.430, ...

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