Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 0 0 1972 12 15 23 28 K. MONTAZEMI  P. AMIRSHAHI G. ROHANI 2015 09 28 In th is study 50 specimens of whole blood were dried on filter paper and kept at 40"C. The purpose in choosing this temperature was to determine the effect of the heat on the amount of haemoglobin in blood samples after a few months. The measurement of haemoglobin was carried out on fresh samples on the first day of sampling and 240 days after sto rage of dried specimens at 40°C. This experiment showed no decrease in haemoglobin between blood samples immediately analyzed and those o f dried blood maintained at 4O"C for periods as long as 8 months. https://acta.tums.ac.ir/index.php/acta/article/view/4150 https://acta.tums.ac.ir/index.php/acta/article/download/4150/4125