A method comprising: scanning a sample container having a sample disposed therein to generate signal data in response to emission of light through the sample container , the signal data including a first signal portion associated with a first portion of the sample container and a second signal portion associated with a second portion of the sample container , the first portion of the sample container different than the second portion of the sample container , the second signal portion including attenuated signal data relative to the first signal portion; detecting that the sample container includes a label attached to a surface of the sample container based on the attenuated signal data ; in response to detection of a label : determining a thickness of the label based on an amount of absorbance of the light relative to signal data collected from another sample container having a label with a known thickness; selecting an adjustment factor for the attenuated signal data based on the thickness of the label and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data to create adjusted signal data ; and determining a property of the sample based on the adjusted signal data . scanning a sample container having a sample disposed therein to generate signal data in response to emission of light through the sample container , the signal data including a first signal portion associated with a first portion of the sample container and a second signal portion associated with a second portion of the sample container , the first portion of the sample container different than the second portion of the sample container , the second signal portion including attenuated signal data relative to the first signal portion; detecting that the sample container includes a label attached to a surface of the sample container based on the attenuated signal data ; in response to detection of a label : determining a thickness of the label based on an amount of absorbance of the light relative to signal data collected from another sample container having a label with a known thickness; selecting an adjustment factor for the attenuated signal data based on the thickness of the label and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data to create adjusted signal data ; and determining a thickness of the label based on an amount of absorbance of the light relative to signal data collected from another sample container having a label with a known thickness; selecting an adjustment factor for the attenuated signal data based on the thickness of the label and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data to create adjusted signal data ; and determining a property of the sample based on the adjusted signal data . <EOS>