Chromosome Analysis, Prenatal/Perinatal Cordocentesis and Fetal Hemoglobin

TEST: 511025
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CPT: Contact CPT coding department at 800-222-7566, ext 6-8400.
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Synonyms

  • Cord blood
  • Fetal blood
  • Karyotyping
  • Percutaneous Umbilical Cord Sampling (PUBS)

Special Instructions

Medical indication for procedure and the patient's name and age should be included on the request form.

Expected Turnaround Time

8 - 13 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Specimen Requirements

Specimen

Fetal blood or cord blood

Volume

1 to 3 mL

Minimum Volume

0.5 mL

Container

Green-top (sodium heparin) pediatric tube

Storage Instructions

Maintain specimen at room temperature.

Causes for Rejection

Specimen frozen; clotted specimen; specimen determined to be maternal in origin

Test Details

Use

Rapid analysis of fetal chromosomes, used most frequently following the determination of fetal amniocyte mosaicism

Methodology

Standard G-banded karyotyping and isoelectric focusing of hemoglobin to confirm fetal derivation of the sample

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
511025 Chromosome, Cordocentesis/HbF 512065 Specimen Type 31208-2
511025 Chromosome, Cordocentesis/HbF 512067 Cells Counted 62361-1
511025 Chromosome, Cordocentesis/HbF 512068 Cells Analyzed 62360-3
511025 Chromosome, Cordocentesis/HbF 512069 Cells Karyotyped 55199-4
511025 Chromosome, Cordocentesis/HbF 512070 GTG Band Resolution Achieved 62358-7
511025 Chromosome, Cordocentesis/HbF 512071 Cytogenetic Result 29770-5
511025 Chromosome, Cordocentesis/HbF 510997 Interpretation 62365-2
511025 Chromosome, Cordocentesis/HbF 510998 Director Review: 48672-0
511025 Chromosome, Cordocentesis/HbF 510180 Fetal Hemoglobin 28067-7
511025 Chromosome, Cordocentesis/HbF 510182 Fetal Hemoglobin N/A
511025 Chromosome, Cordocentesis/HbF 512123 PDF 51967-8

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