Ordering Recommendation

Determine if the C (RH2) antigen is expressed on the patient's red blood cells. To determine if the patient is heterozygous or homozygous for the C antigen, Little c Antigen Typing - Patient (2007939) should also be ordered.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Lavender (K2EDTA) or Pink (K2EDTA).

Specimen Preparation

Do not freeze. Transport 7 mL whole blood. (Min: 0.5 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Separator tubes.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: 1 week; Frozen: Unacceptable

Methodology

Hemagglutination

Performed

Mon-Fri

Reported

1-3 days

Reference Interval

By report

Interpretive Data



Compliance Category

Standard

Note

Hotline History

N/A

CPT Codes

86905

Components

Component Test Code* Component Chart Name LOINC
2007934 C Antigen Typing, Patient
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Big C Antigen Typing ; C (Big) Antigen Typing
  • RH2 antigen
C Antigen Typing - Patient