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CHROMOSOME ANALYSIS, BLOOD
Number 174
CPT Code 88262
Alias CHROMOSOME ANALYSIS
Specimen Container Green Top Heparin
Specimen Type Whole Blood Sodium Heparin
Turn Around Time
Days Performed
Reference Range
Alternate Specimen
Volume 5 mL Whole Blood
Stability Ambient
Stability Refrigerated
Stability Frozen N/A
Patient Preparation
Pertinent medical findings must accompany request for chromosome analysis. Include the patient’s name, age and suspected diagnosis.
Methodology
Lymphocyte culture with mitogen stimulation, colchicine arrest of cells in mitosis with predominantly early metaphases, methanol/acetic acid fixation, spread preparation, trypsin-Giemsa banding, chromosome analysis of 20 metaphases with preparation and analysis of multiple karyotypes.
Limitations
Rejection Criteria
Hemolysis; clotted specimen; use of improper anticoagulant; frozen specimen
Additional Instructions
Performing Laboratory Reference Laboratory
TagsKARYOTYPE, G-BANDING, CONSTITUTIONAL