A method comprising: scanning a sample container (104, 1302, 1804) having a sample (102, 1300, 1802) disposed therein to generate signal data (1002, 1004, 1006, 1008, 1102, 1104, 1106, 1108, 1308, 1310, 1312, 1314) in response to emission of light through the sample container (104, 1302, 1804), the signal data including a first signal portion associated with a first portion of the sample container (104, 1302, 1804) and a second signal portion associated with a second portion of the sample container (104, 1302, 1804), the first portion of the sample container (104, 1302, 1804) different than the second portion of the sample container (104, 1302, 1804), the second signal portion including attenuated signal data (1110, 1316) relative to the first signal portion; detecting that the sample container (104, 1302, 1804) includes a label (202, 1304) attached to a surface of the sample container (104, 1302, 1804) based on the attenuated signal data (1110, 1316); in response to detection of a label (202, 1304): determining a thickness of the label (202, 1304) based on an amount of absorbance of the light relative to signal data collected from another sample container (104, 1302, 1804) having a label (202, 1304) with a known thickness; selecting an adjustment factor for the attenuated signal data (1110, 1316) based on the thickness of the label (202, 1304) and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label (202, 1304) with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data (1110, 1316) to create adjusted signal data (1318, 1402, 1404, 1406, 1408); and determining a property of the sample (102, 1300, 1802) based on the adjusted signal data (1318, 1402, 1404, 1406, 1408). scanning a sample container (104, 1302, 1804) having a sample (102, 1300, 1802) disposed therein to generate signal data (1002, 1004, 1006, 1008, 1102, 1104, 1106, 1108, 1308, 1310, 1312, 1314) in response to emission of light through the sample container (104, 1302, 1804), the signal data including a first signal portion associated with a first portion of the sample container (104, 1302, 1804) and a second signal portion associated with a second portion of the sample container (104, 1302, 1804), the first portion of the sample container (104, 1302, 1804) different than the second portion of the sample container (104, 1302, 1804), the second signal portion including attenuated signal data (1110, 1316) relative to the first signal portion; detecting that the sample container (104, 1302, 1804) includes a label (202, 1304) attached to a surface of the sample container (104, 1302, 1804) based on the attenuated signal data (1110, 1316); in response to detection of a label (202, 1304): determining a thickness of the label (202, 1304) based on an amount of absorbance of the light relative to signal data collected from another sample container (104, 1302, 1804) having a label (202, 1304) with a known thickness; selecting an adjustment factor for the attenuated signal data (1110, 1316) based on the thickness of the label (202, 1304) and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label (202, 1304) with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data (1110, 1316) to create adjusted signal data (1318, 1402, 1404, 1406, 1408); and determining a thickness of the label (202, 1304) based on an amount of absorbance of the light relative to signal data collected from another sample container (104, 1302, 1804) having a label (202, 1304) with a known thickness; selecting an adjustment factor for the attenuated signal data (1110, 1316) based on the thickness of the label (202, 1304) and reference adjustment factor data, the reference adjustment factor data including a known adjustment factor for the label (202, 1304) with the known thickness; adjusting the second signal portion by applying the adjustment factor to the attenuated signal data (1110, 1316) to create adjusted signal data (1318, 1402, 1404, 1406, 1408); and determining a property of the sample (102, 1300, 1802) based on the adjusted signal data (1318, 1402, 1404, 1406, 1408).