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HelpTest Code MISC6HENRYCYTO210001 Chromosome Analysis, Neonatal - Blood
Department
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Reference Lab Test Number
CYTO2100001
Collection Requirements
NICU INPATIENTS ONLY.
Pertinent medical findings including physical features, mental status, date of birth, sex, suspected diagnosis, and diagnostic code must accompany any request for chromosome analysis.
Venipuncture. Blood from a stillborn may be taken by heart puncture or from the umbilical cord.
Primary Collection Container
Green (Sodium Heparin)
Transport
Whole blood ambient
Preferred Transport Temperature
Ambient
Processing
Transport at room temperature within 12 hours of collection.
Stability
Ambient: 48 hours
Minimum Testing Volume
3.0 mL
Reference Range
By report
Methodology
Cell culture and cytogenetic analysis
Performed
Monday – Friday:
8:00 am – 5:00 pm
Saturday:
8:00 am – 12:00 pm
Reported
7-21 days
Preliminary report on infant blood available within 24 to 48 hours.
CPT Codes
-88230; 88261; 88280; 88285; 88291
Unacceptable Conditions
Clotted, hemolyzed, or frozen specimens, specimen more than 72 hours old, use of improper anticoagulant, specimen without a Genetic Test Request Form or tubes not labeled with patient identification.
Additional Information
Consult the Laboratory Director for studies other than routine G-banding karyotype and FISH. This test can evaluate congenital malformations, mental retardation, growth retardation, reproductive disorders, sex chromosome abnormalities, Down syndrome, and other suspected chromosomal disorders. Additional testing such as FISH for Microdeletion Syndromes or FISH Telomere Rearrangement Panel or Array CGH may be indicated. The Department of Medical Genetics provides inpatient consults, follow-up clinic visits, and genetic counseling. The patient should call (313) 916-3188 for an appointment.