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Laboratory Test Directory

STAT Chromosome Analysis (High Resolution), Peripheral Blood


Name Method Department Units
STAT Peripheral Blood, Chromosome Analysis Chromosomal analysis

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume

Green tube (Sodium heparin), No Gel

3 mL 1 mL-3 mL

Room temperature - 24 hour(s)

Specimen Preparation

  • Do not refrigerate
  • Do not freeze
  • Do not centrifuge
  • Keep at room temperature

Reasons for Rejection

  • Centrifuged specimen
  • Collected in tube with gel separator
  • Wrong collection tube
  • Frozen whole blood


Please click on the Lab Form Link in the Forms Section to print and complete the Genetic Test Requisition Form. Completed Genetic Test Requisition Form is required. Peripheral blood and cord blood samples are accepted for this testing. STAT chromosome analysis can provide a verbal preliminary chromosome result (non-high resolution) in 2 business days (within 72 hours) from the time sample received by the laboratory. Final written report including high resolution chromosome analysis is available in ~7 days. This test is useful for newborn patients who are suspected of having numerical chromosome abnormalities, such as trisomy 21, trisomy 13, trisomy 18, and Turner syndrome. Orderin g provider MUST clearly indicate "STAT" on the lab order. Ordering provider MUST call the laboratory at the time of speicmen submission if STAT result call-out for Saturday or Sunday is desired. Please collect whole blood sample in a sodium heparin tube (dark green-top tube without gel separator). Do not use lithium heparin or other types of heparin tubes. Check tube label for proper type of heparin. Label tube as STAT.


Lab Form

CPT Code

  • 88230
  • 88262
  • 88289