text: In the mid-trimester, we do amniocentesis, yo
  Aspirating 12-15 ml, checkin' the flow
  Amniotic fluid, analyzed in the lab
  Cytogenetic study, gotta know what's fab
  
  Early amniocentesis, another technique
  Same volume removed, first trimester sneak
  But it's a big chunk, a significant share
  Depleting fluid, yo, it's a real affair
  
  For 7 to 10 days, that fluid's gone
  Might affect lungs and limbs, it's not a con
  Procedure-related issues, we gotta beware
  Congenital abnormalities, miscarriages to spare
  
  But hold up, we found a better way to play
  Removing just 7 ml, keepin' risks at bay
  Miscarriage rate's low, just 3.8 percent
  Comparing large studies, we're quite content
  
  Respiratory difficulties, they're only 2.7 percent
  At birth, no major problems, that's the event
  Fixed flexion deformities, just 1.6 percent
  We're keepin' it low, yo, that's our intent
  
  But there's a small trade-off, culture failure's a bit
  Incidence increased, 2.2 percent, we admit
  But overall, we're makin' progress, it's clear
  Improving procedures, reducing fear