title: Increased renin concentration in plasma and amniotic fluid during storage.
abstract: Renin concentration was determined in plasma and amniotic fluid samples immediately after collection, after storage at -18 degrees C for up to 48 h, and after storage at 5 degrees C for as long as 48 h. Renin concentration increased, both in plasma (p less than 0.05) and amniotic fluid (P less than 0.02), after the storage at 5 degrees C, but no significant alteration occurred on storage at -18 degrees C. Partial activation of inactive renin could explain the observed increase in renin concentration at 5 degrees C.
mesh_terms: D000653:Amniotic Fluid / Q000201:enzymology*; D005260:Female; D005615:Freezing; D006801:Humans; D007700:Kinetics; D011247:Pregnancy; D012083:Renin / Q000032:analysis* / Q000097:blood; D013048:Specimen Handling; D013997:Time Factors
chemical_list: D012083:Renin