Test Overview
Test Usage

Establish serologic evidence of maternal antibody in infant's serum.

Reference Range *

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

1 - 4 hours

Soft Order Code
CB
Synonyms
  • Cord Blood
  • Erythroblastosis Fetalis
  • HDN Screen
  • Hemolytic Disease of the Newborn (HDN)
  • CORD BLOOD ABO RH INTERP
  • CORD BLOOD SPECIMEN RECEIVED
Laboratory
Blood Bank
Section
Blood Bank
Specimen Requirements
Collection Instructions

Collect cord blood in a yellow top (no additive) or pink top tube. Refrigerate and send intact specimen. Cord blood should be obtained by venipuncture of a cord vessel. Do not obtain specimen by squeezing the cut end of the umbilical cord since tissue thromboplastin interferes with studies. Cord blood is the preferred specimen, however a venous sample is acceptable. Collect venous specimens in a pink top tube. Refrigerate and send intact specimen. Specimens sent for Blood Bank testing cannot be split for use by other laboratories.

Alternate Specimen
IN-HOUSE: Yellow top tube (no additive) is preferred. Lavender and Pink top tubes (intact specimen) may be substituted. All other specimen types are unacceptable. MLABS: Pink top tube (intact specimen) is preferred; the following are acceptable: lavender top (glass or plastic), red top (glass only). Plastic red top tubes will be rejected without exception. [10/03; rev 4/04; rev 7/05]
Normal Volume
6 mL of Cord Blood or 2 mL of Venous Blood
Minimum Volume
2 mL of Cord Blood or 2 mL of Venous Blood
Storage Temperature
R
Additional Information

Test includes: ABO, Rh, IgG Direct Antiglobulin Test, and other tests necessary to confirm or exclude the diagnosis of HDN.

Billing
CPT Code
86900 ABO, 86901 Rh, 86880 DAT
Fee Code
21250 ABO, 21252 Rh, 21256 DAT
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