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- DNA Histogram, Paraffin
DNA index; histogram interpretation
Cancer prognosis. In general, aneuploid tumors have an unfavorable prognosis compared to diploid tumors.
Use of fixatives other than formalin may not yield equivalent or satisfactory results. No % S phase is reported for tumors analyzed by image cytometry. Small biopsies require image analysis of a 6-μ tissue section. This test is not a diagnostic test for cancer.
The DNA index is a measure of the nuclear DNA content of tumor cells compared to normal cells. Tumors with abnormal DNA content are termed DNA aneuploid while those with DNA content equal to normal cells are termed DNA diploid.
Formalin-fixed, paraffin-embedded (FFPE) tumor (tissue block)
One paraffin block
Specimen should be fixed in 10% neutral-buffered formalin. Optimum fixation time is 12 to 24 hours, not to exceed 48 hours.
Maintain specimen at room temperature.
Please direct any questions regarding this test to oncology customer service at 800-345-4363.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|480327||DNA Ploidy, Paraffin Block||487018||Tissue Site||N/A|
|480327||DNA Ploidy, Paraffin Block||487002||Specimen Received||N/A|
|480327||DNA Ploidy, Paraffin Block||487003||Method of Analysis||N/A|
|480327||DNA Ploidy, Paraffin Block||487004||DNA Index (Population 1)||30912-0|
|480327||DNA Ploidy, Paraffin Block||487017||S Phase Interpretation||N/A|
|480327||DNA Ploidy, Paraffin Block||487012||Ploidy Interpretation||N/A|
|480327||DNA Ploidy, Paraffin Block||487026||Director Review||72486-4|