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Rh Typing

CPT: 86901
Updated on 06/8/2021
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Synonyms

  • Rh Factor

Test Includes

Rh(D) typing


Special Instructions

If a CBC and/or an antibody screening test is ordered with this test, please submit a separate 4 mL specimen for each test.

If a CBC and/or an antibody screening test is ordered with this test, please submit a separate 4 mL specimen for each test.


Expected Turnaround Time

1 - 2 days


Related Documents


Specimen Requirements


Specimen

Whole blood


Volume

4 mL


Minimum Volume

0.5 mL


Container

Lavender-top (EDTA) tube


Storage Instructions

Specimens should be tested as soon as possible. Samples that cannot be tested immediately should be stored at 2°C to 8°C. Do not freeze red cells.


Stability Requirements

Temperature

Period

Room temperature

7 days

Refrigerated

7 days


Causes for Rejection

Gross hemolysis; bacterial or other contamination


Test Details


Use

Determine Rh type for transfusion candidates. Rh typing of expectant mothers may indicate potential for Rh hemolytic disease of the fetus/newborn. This typing is also used to determine Rh immune globulin candidacy for prenatal and postpartum patients.


Limitations

Presence of potent cold autoagglutinins, positive direct antiglobulin test, and, in some cases, bacteremia may interfere with test interpretation. Variable testing results may be observed with partial antigens which are rare variants of the D antigen.


Methodology

Hemagglutination


References

Fung MK, Grossman JB, Hillyer CD, Westoff CM, eds. AABB Technical Manual. 18th ed. Bethesda, Md: American Association of Blood Banks;2014.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
006064 Rh Factor 10331-7 006064 Rh Factor 10331-7
Reflex Table for Rh Factor
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 114066 Rh Factor 006052 Rh Factor 10331-7

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