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Additional
Karyotypes
Description
Extra karyotypes may be prepared in addition to a routine chromosome
analysis when more than two cell lines have been discovered, or
when multiple complex chromosome rearrangements have been found.
Indications
• mosaicism with more than two abnormal cell lines
• bone marrow or unstimulated peripheral blood with multiple
abnormal clones and/or multiple complex chromosome rearrangements
Specimen Requirements
Additional karyotypes are prepared from chromosome spreads that
have already been prepared from a submitted specimen. Usually no
further specimen is required.
Reference Value
46,XX or 46,XY
Turn Around Time
Chromosome analysis with complex chromosome abnormalities requiring
additional karyotypes usually increases the average turn around
time by a few days.
CPT Codes
88280 - chromosome analysis, additional karyotypes
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