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Chromosome study - Blood, standard-4280F

Test info

Test name:

Chromosome study - Blood, standard

Test number:

4280F

Excellian order number:

LAB4280F

Alternate names:

Karyotype analysis
Routine chromosome analysis
Congenital

Specimen

Specimen type:

Sodium heparin (Na hep) whole blood

Collection container:

Dk green Sodium heparin (Na hep), no gel

Volume:

5.0 mL

Minimum volume:

2.0 mL

Collection instructions:

If both chromosome and FISH tests are ordered, only 1 tube is needed
Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Processing instructions:

If both chromosome and microarray tests are ordered, follow sample requirements for microarray test.

Transport container:

Dk green Sodium heparin (Na hep), no gel

Alternate specimen type:

Sodium heparin (Na hep) cord blood

Alternate specimen volume:

5.0 mL (2.0 mL minimum)

Transport and stability:

Ambient (strict)

Reason for rejection:

Improper label (unlabeled or mislabeled)
Wrong container (anticoagulant or solution)
Improper blood/anticoagulant ratio
Delay in transport
Improper storage
Leaking container

Performance

Performing lab:

AHL - Cytogenetics: X

Days set up:

2 - 3 times per week

TAT:

Routine: 18 days
STAT Newborn samples: 7 days (Call lab to expedite testing)

Method:

G-Banding

Clinical and Interpretive info

Reference ranges:

An interpretive report will be provided

Billing

CPT codes:

88230
88262
Reflex: 88285 - additional cells counted
Reflex: 88280 - additional karyotype
Reflex: 88283 - additional specialized banding

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Tracking

Date created:

10/26/2012

Revised date:

11/13/2018