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Laboratory Test Directory

Chromosome Analysis, Percutaneous Umbilical Blood


Name Method Department Units
Percutaneous Umbilical 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 freeze
  • Do not centrifuge
  • Do not refrigerate
  • Keep at room temperature

Reasons for Rejection

  • Centrifuged specimen
  • Collected in tube with gel separator
  • Wrong collection tube
  • Delayed or improper handling
  • Frozen specimen
  • Clotted specimen


Completed Prenatal Genetic Test Requisition Form is required. This test performs STAT chromosome analysis on fetal blood sample obtained by percutaneous umbilical blood sampling (PUBS) procedure. Please collect fetal blood sample in Sodium Heparin tube (dark green-top tube without gel separator). Please do not use Lithium Heparin tube or tubes with other fixatives. Check tube for proper type of heparin and label tube as STAT. Please call the Cytogenetics Lab at (614) 722-5321 prior to shipping to inform the lab. Verbal STAT preliminary result (non-high resolution chromosome result) will be available in 2 business days (within 72 hours) from time specimen received by the laboratory. Final written chromosome result (high resolution chromosome result) will be available in ~7 days.

CPT Code

  • 88230
  • 88262
  • 88289