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Test Code LAB888 Chromosome Analysis, Peripheral Blood

Important Note

Completed Genetics Test Requisition required. Please collect whole blood specimen into a Sodium Heparin tube (dark green-top tube without gel separator). Do not use Lithium Heparin tube or other types of heparin tubes; please check tube for proper type of heparin. For newborn patients, STAT blood chromosome analysis is available at extra charge (see test code STATPB), which provides faster result TAT. Chromosome analysis reflex to Microarray analysis is also available. If patient has a family history of known chromosome abnormality, please provide the family member's chromosome result information (attach a copy of test result if available). If the proband was tested at Nationwide Childrens' Hospital Cytogenetics Laboratory, please provide the proband name, date of birth, and accession number (if available). If evaluation of extra cells (beyond the routine 20 cells) is desired to rule out low-level mosaicism, please request Mosaicism Study and 50 cells will be evaluated at extra charge.

Reporting Title

Chromosome Analysis, Peripheral Blood

Methodology

Chromosomal analysis

Performing Laboratory

Nationwide Children's Hospital, ChildLab Columbus Ohio

Specimen Requirements

Container/Tube:

Green Sodium Heparin, No Gel

Specimen Volume:

ADULT 5ML-8ML

CHILD 3ML-6ML

INFANT 1ML-3ML

Reasons for Rejection

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

Specimen Transport Temperature

Room temperature - 48 hour(s)

Refrigerated- 72 hour(s)

SPECIMEN PREPARATION

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

Day(s) Test Set Up

Monday through Friday

8:00-17:00

TYPICAL TURNAROUND TIME

3 week

 

Test Classification and CPT Coding

CPT Code

  • 88230
  • 88262
  • 88289