Days Set Up
Monday - Friday, 8:00am - 4:00pm. If necessary a STAT courier may be arranged for processing a sample on a priority basis. Call the laboratory at 763-5805 for additional information.
Analytic Time

3 - 4 weeks

MiChart Code
Cytogenetics, Chromosome Analysis/Karyotype, Blood for Genetic Disorder (No
Soft Order Code
CGNBD

Test Updated:

Synonyms

Cytogenetics, Blood, Constitutional
Karyotype, Routine
Karyotype, Peripheral Blood
CGLABEL
GENERIC CYTOGENETICS TEST
Chromosome Analysis for Congenital Disorders
TCL
TISSUE CULTURE-LYMPHOCYTE
RTBLOOD
PERIPHERAL TYPE
CGNBD
Chromosome Analysis, Peripheral Blood for Genetic Disorder (Non-malignant)

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Stimulated lymphocyte culture and chromosome analysis. Fluorescence In Situ Hybridization (FISH) when indicated.

Test Usage

Evaluation of congenital malformations, still birth, mental retardation, growth retardation, infertility, cryptorchidism, hypogonadism, amenorrhea (primary), abnormal/ambiguous genitalia, recurrent miscarriage, Turner syndrome, Klinefelter syndrome, Down syndrome, and other suspected chromosomal disorders.

Reference Range

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect blood into a green top (sodium heparin) tube; invert several times to mix. A FISH test can be combined with chromosome analysis - only needs one tube (see Cytogenetics, FISH for Genetic Disorder). Please complete a MiChart test request and submit it with the specimen. A Cytogenetics Laboratory Requisition is available online at: http://www.pathology.med.umich.edu/handbook/Tables/UM_REQ_CYTOGENETICS….

Collection Offsite

Specimen transport should be arranged so that the specimen is received by MLabs the same day it is collected. Call for a STAT courier if necessary. Collect specimen in a green top (sodium heparin) tube. Invert the tube several times to prevent clotting. Send the specimen intact at room temperature as soon as possible. DO NOT CENTRIFUGE.

Normal Volume
5 mL whole blood
Minimum Volume
2 mL whole blood

Billing Information

CPT Code
88262 Chromosome Analysis, 88230 Tissue Culture
Pro Fee Code
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.