Tube Type:
Green top (sodium heparin) tube
Cause for Rejection:
Clotted, non-sterile, or frozen specimen
Availability:
Mon-Fri (0700-1600) Sat (0900-1300)
Methodology:
Cell culture of lymphocytes, harvest and chromosome analysis with G-banding
Special Instructions:
Five blood gas tubes can be used. Rapid (24 hour) determination of chromosome copy number and category for sex chromosomes or to r/o trisomy 13, 18 or 21 can be ordered with peripheral blood sample (see Sex Chromosome Analysis by DNA FISH, Newborn Smear or Trisomy Analysis (Chromosome 13, 18 or 21) by DNA FISH, Newborn Smear). Include pertinent medical findings on the requisition with suspected diagnosis and/or indication(s) for testing.
