Acid Hemolysin (Ham Test)
0049010
Ordering Recommendation
This acid hemolysin (Ham) test is the preferred initial test for the rare genetic disorder, congenital dyserythropoietic anemia type II. This test is considered obsolete for the diagnosis of paroxysmal nocturnal hemoglobinuria. The preferred initial diagnostic test for paroxysmal nocturnal hemoglobinuria is the Paroxysmal Nocturnal Hemoglobinuria (PNH), RBC and WBC (2005006).
Mnemonic
HAM
Methodology
Visual Identification
Performed
Mon-Fri
Reported
1-2 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Plain red AND lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Separate serum from cells within 2 hours of collection. Transport 3 mL serum AND 5 mL whole blood. (Min: 1.5 mL serum AND 1 mL whole blood).  
Storage/Transport Temperature
Room temperature. Specimens should be received within 24 hours of collection and testing must be performed within 48 hours of collection.  
Unacceptable Conditions
Serum specimens that have not been separated from the cells within 2 hours of collection.  
Remarks
Indicate patient's blood type on test request form.  
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: Unacceptable; Frozen: Unacceptable  
Reference Interval
Negative  
Interpretive Data
Refer to report.  
Note
 
CPT Code(s)
85475
Components
Component Test Code*Component Chart NameLOINC
0049010Acid Hemolysin (Ham Test)13533-5
* 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
  • Congenital Dyserythropoietic Anemia Type II