Ordering Recommendation

Determine if the c (RH4) antigen is expressed on the patient's red blood cells. To determine if the patient is heterozygous or homozygous for the c antigen, C Antigen Typing - Patient (2007933) should also be ordered.

Mnemonic

C LITTLEAG

Methodology

Hemagglutination

Performed

Mon-Fri

Reported

1-3 days

New York DOH Approval Status

This test is New York DOH 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

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
2007940 Little c Antigen Typing
* 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

  • c (little) Antigen Typing
  • Little c Antigen Typing
  • RH4 antigen
Little c Antigen Typing - Patient