There are a few factors which should be considered in relation to sample quality for LBx samples. Here is a partial list. Status of the donor: - Patient Dehydration (when possible, donors should drink a glass of water within 4 hr of blood donation) - Treatment Regime (when possible, allow at least seven days washout for infused cytotoxic therapy. For hormonal and immunotherapies administered orally, when possible, collect blood before daily dosage.) - General health of patient ## Related to: - [[On Science]] - [[On Oncology]] - [[On Laboratory]] - [[On Assay Development]]