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Laboratory Test Directory

Chromosome Analysis, 5-Cell Confirmation in Peripheral Blood

Components

Name Method Department Units
Periph Blood, Chromosome Analysis, 5-Cell Confirm Chromosomal analysis
Cytogenetics

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Green tube (Sodium heparin), No Gel

10 mL 5 mL-8 mL Adult
Stability

Room temperature - 24 hour(s)

Preferred

Green tube (Sodium heparin), No Gel

10 mL 5 mL-8 mL Child
Stability

Room temperature - 24 hour(s)

Preferred

Green tube (Sodium heparin), No Gel

3 mL 1 mL-3 mL Infant
Stability

Room temperature - 24 hour(s)

Specimen Preparation

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

Reasons for Rejection

  • Centrifuged specimen
  • Frozen specimen
  • Clotted specimen
  • Wrong collection tube

Comments

Submission of a completed Genetic Test Requisition Form is required. To obtain the requisition form, please call the Cytogenetics Laboratory at (614) 722-5321. Please collect whole blood specimen in a Sodium Heparin tube (dark green-top tube without gel separator). DO NOT use Lithium Heparin tube or other types of Heparin tubes.

This test is intended for patients who have previously had abnormal chromosome results in the prenatal period (e.g. CVS or amniotic fluid samples) or patients who have had aneuploidy or chromosome imbalance detected on microarray analysis. This test evaluates chromosomes in 5 cells (cultured lymphocytes) from blood sample to confirm previous chromosome findings. Please provide the patient's previous cytogenetic test results with the sample and requisition form.

Please note - this test should not be ordered if mosaicism is suspected. If complete blood chromosome analysis (20 cell evaluation) is desired, please order test code: PBCS.

CPT Code

  • 88230
  • 88261