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:
Chromosome harvest of mitotic cells (with and without culturing) with G-banding
Special Instructions:
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 for indication (s) for the testing.
