Ordering Recommendation

Determine if the Cw (RH8) antigen is expressed on the patient's red blood cells.

Mnemonic

CW AG

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

Interpretive Data



Compliance Category

FDA

Note

Hotline History

N/A

CPT Codes

86905

Components

Component Test Code* Component Chart Name LOINC
2013505 Cw_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

  • Cw antigen typing, RH8 antigen typing, C(w) antigen typing
  • RH8 antigen
Cw Antigen Typing, Patient