Small molecules <500
urea (60), creatinine (113), phosphate (134)
Middle molecules 500-15000
vitamin B12 (1355), vancomycin (1448), insulin (5200), endotoxin fragments (1000-15000), β2-microgobulin (11818)
Large molecules >15000
myoglobin (17000), EPO (34000), albumin (66000), Transferrin (9000), α1-microglobulin (33,000)
