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Test Code XYFSH Sex Chromosome FISH

Additional Information

Do not refrigerate sample

Collection Container

Green (Sodium Heparin)

Specimen Required

Peripheral Blood or Buccal swab

Special Handling Instructions

Send to Referral Laboratory with copy of ordering requisition.  If sending buccal swab, please call 413-322-4667 for collection kit.

Specimen Volume

5 mL

Minimum Specimen Volume

2 mL

Transport Temperature


Specimen Stability

Stable at ambient temperature

Reasons for Rejection

Incorrect tube, insufficient quantity


Fluorescent in-situ hybridization

Turnaround Time

Preliminary results available after 4 - 5 days, final report within 7 - 10 days.

Reference Ranges

Laboratory to provide interpretive report.

CPT Code

88230, 88271, 88275

EMR Interface Order Code