Sign in →

Test Code LAB10401 Prenatal Blood Bank

Performing Lab

Arnot Ogden Medical Center/ Ira Davenport Memorial Hospital

Ordering Recommendations

Detection of allo- or autoantibodies directed against red blood cell antigens in the settings of prenatal testing.

Determination of blood type for Rhophylac eligibility.

Collect

Whole Blood

Collection Device

EDTA Pink Tube

Specimen Handling

Refrigerated

Stability (from collection to initiation)

Room Temp 24 hours
Refrigerated 3 days

Storage/Transport Temperature

Room Temp or Refrigerated

Specimen Volume

5 mL

Minimum Requirements

3 mL

Remarks

TURN AROUND TIME

STAT 1 hour
Routine 8 hours

*Additional testing may cause turn around time delays.

Interpretive Data

A patient who is Rh negative is a candidate for Rhophylac as long as they have not already developed a true Anti-D from previous pregnancy or transfusion.

A positive antibody screen necessitates antibody identification to establish specificity and clinical significance in relation to Hemolytic Disease of the Fetus and Newborn, HDFN.

Antibodies that cause HDFN require monthly antibody titer to assess the strength of the antibody.

Notes

If the antibody screen is positive, then antibody identification will be performed. If the antibody is capable of causing Hemolytic Disease of the Fetus and Newborn, then a titer will be performed to obtain a baseline titer. The following tests may also be performed: Polyspecific (IgG/C3d) Direct Coomb’s, Monospecific (IgG) Direct Coomb’s, and Antibody Elution. Patient samples requiring further testing will be sent to the American Red Cross.

Methodology

Manual, Automated, Gel Column, Capture Solid Phase Technology

Start Date

9/13/2017

Last Review Date

TBD