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Score
Additional Cells
Description
Cells may be scored in addition to a routine chromosome analysis
to rule out chromosomal mosaicism. Ten to 80 additional cells may
be scored to look for the presence or absence of a particular cytogenetic
aberration. Additional cells are scored at the discretion of the
cytogenetic laboratory director.
Indications
• mosaic sex chromosome abnormalities
• mosaic autosomal trisomies
• mosaic structural rearrangements
• abnormal bone marrow or unstimulated peripheral blood with
multiple abnormal clones and/or multiple complex chromosome rearrangements
Specimen Requirements
Additional cells are scored on 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
Depends upon the type of specimen. Does not significantly increase
the usual turn around time for a particular specimen type.
CPT Codes
88248 - chromosome analysis, score additional cells
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