"Good point." Osias only chuckled. He was a patient man and Charls was far from aggravating; rather, he found his questions sound and intriguing. At least someone was thinking of the finer points of business. Charls's arm was on full display and Osias placed one hand against his arm, fingers helping to guide the needle into the man's flesh and he began to pull back, filling the syringe slowly.
"We do, actually. Have machines to preserve the samples longer...the only problem is, I need fresh ones, to compare to the old." Osias said, briefly flashing Charls a bright smile as he removed the needle, laying it on the sanitary tray beside the table. He took a swab, wiping the droplet of blood which sprang up in place of the puncture and held it in place as he bent Charls' arm, pushing it upright.