Chromosome Analysis, Newborn (up to 21 days old)


Abbrev Code:BLNBCG   
Order Code:LAB4689Order Name:Chromosome Analysis, Newborn (up to 21 days old)
Synonyms:CHROM NB; Constitutional, Congenital; G-bands; Chromosome Blood Newborn
Methodology:Chromosome analysis by G-banding.
CPT Codes: 88230 x1, 88264 x1, 88291 x1
Turnaround Time:Verbal preliminary results are reported within 48 hours when clinically indicated; final results are reported within 7 days.
Special Instructions:Test request form requires:
  • Date and time of specimen collection
  • Specimen type
  • Patient information: date of birth, sex, and medical record number
  • Ordering physician and contact number
  • Reason for referral
  • Clinical status
  • Information regarding medications or transfusions
  • Previous or pending genetic testing results

  A signed informed consent in the patient's medical record is required. The consent should not be sent to the laboratory. The link to the Genetic Testing Consent form is provided as a convenience for the providers and genetic counselors. See Associated Links.
Associated Links:

Genetic Testing Consent Form



Collection Instructions

Specimen:Whole blood
Alternative: Cord blood
Optimal Volume:3 mL
Minimum\Peds Volume:1 mL
Container:Green (sodium heparin, no gel)
Causes for Rejection:Clotted or frozen specimen. Incorrect specimen collection tube (anticoagulant).


Processing and Shipping

Specimen Processing:Store at room temperature. Do NOT refrigerate or freeze. Do not process.
Specimens must be received in the Cytogenetics Laboratory Mon-Fri by 5:30 pm. Weekends and holidays by 4:30 pm. Specimens received after these cutoffs will be processed the following day.
Shipping Instructions:Ship at room temperature.
Stability:
For optimal testing results the specimen must arrive within 24 hours.  
Test Performed at or Referral Lab Cytogenetics  (UMMC East Bank)


Click HERE to Report test errors or omissions.
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