CHROMOSOMAL ANALYSIS PERIPHERAL BLOOD

Mnemonic

MISC

Synonym

Karyotype - Karyotyping - Chromosomes - Chromosome Study - Cytogenetics

Specimen Collection Requirements

Collect

Whole Blood in a dark green (preservative free sodium heparin) top tube

Handling

Preservative free sodium heparin, dark green top tube, is the preferred anticoagulant. These specimen requirements also apply to high resolution chromosomes and shortened turn around time for neonates. Keep specimen at ambient temperature and transport within 24 hours. NOTE: Newborn bloods must be handled STAT.

Preferred Volume

4.0 mL

Minimum Volume

1.0 mL (No Heel Sticks)

Transport

Room temperature within 24 hours of collection

Rejection Criteria

Capillary sticks

Stability

Ambient: 24 hours; Refrigerated: Suboptimal, call Cytogenetics Lab at (503) 413-4613

Testing Information

Note

Clinical information including the indication for study must accompany the specimen. This includes a detailed list of congenital abnormalities, reproductive history with known carrier status for genetic conditions. Cytogenetics requisitions are available upon request. Call Client Services for assistance with specimen transportation or to obtain supplies.

Performed

7 days/week

Reported

4-5 weeks

Method

Classical G-Band Chromosomal Analysis

Reference Values

Reference Values

Cytogenetic interpretation provided. A computer generated karyotype provided with each study.
Normal range:
46,XX, apparently normal female
46,XY, apparently normal male
If Genetic Counseling is needed, call (503) 413-4156.

Comments

For question regarding the report, please call (503) 413-4613.

Last Updated: Thursday, January 5, 2017 03:42:03 AM