Limited G-Band Chromosome Analysis
Abbrev Code: | LTDHR | ||
Order Code: | LAB6603 | Order Name: | Limited G-Band Chromosome Analysis |
Synonyms: | LTD-HR; G-Bands; Karyotype; Limited G Band Analysis; Limited Chromosomes | ||
Methodology: | Chromosome analysis by G-banding | ||
CPT Codes: | 88261 x1, 88230 x1, 88291 x1, 88237 x1 | ||
Turnaround Time: | Performed Monday-Saturday; results are reported within 7-21 days. | ||
Special Instructions: | Limited G-band Chromosome Analysis should be ordered if requested by the Cytogenetics Laboratory or if a previous Microarray (CMA) study was completed in the Cytogenetics Laboratory on the patient. This test is not sufficient as a stand-alone test under routine circumstances:
Test request form requires:
A signed informed consent in the patient's medical record is required. The consent should not be sent to the laboratory. A link to the Genetic Testing Consent Form is provided as a convenience for the providers and genetic counselors. See Associated Links. |
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Associated Links: |
Collection Instructions
Specimen: | Whole blood or bone marrow |
Optimal Volume: | Whole Blood: 10 mL in green (sodium heparin, no gel).
Bone Marrow: 5 mL aspirate in a dry heparin syringe. |
Minimum\Peds Volume: | Whole Blood: 5 mL in green (sodium heparin, no gel). 1-3 mL is acceptable for infants or children.
Bone Marrow: 3 mL aspirate in a dry heparin syringe. |
Container: | Green (sodium heparin, no gel) Alternate Containers: Dry heparin syringe |
Causes for Rejection: | Clotted or frozen sample. Incorrect specimen collection tube (anticoagulant). |
Processing and Shipping
Specimen Processing: | Do not process. Store at room temperature. Do not refrigerate or freeze.
Specimens must be received in the Cytogenetics Laboratory Monday - Friday, weekends and holidays between 8:00 am and 5:00 pm. Specimens received after the cutoff 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) |
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