Test Directory

Test Code
HAPT
Test Name
Haptoglobin
CPT Codes
83010
Expected Turnaround Time
2 - 4 days
Clinical Utility
Decreased levels occur with intravascular hemolysis or extravascular hemolysis. Increased levels occur with acute or chronic inflammatory response, tissue destruction, and malignant neoplasms. An isolated result may not be very helpful due to the wide normal range. However, if the baseline "normal" value is known, a low value can be used to confirm a hemolytic episode.
Specimen and Container Info

Preferred Specimen Type: Serum

Desired Specimen Volume: 2 mL

Preferred Collection Container: Gold Top, Serum Separator

Processing and Submission Instructions

Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results.

Transport Instructions

Transport refrigerated. 

Stability Requirements

Refrigerated

7 days

Frozen

3 months at -20° if frozen within 24 hours of collection.

Freeze/Thaw Cycles

Avoid multiple freeze/thaw cycles. 

Methodology
Turbidimetric
Reference Intervals

34-200 mg/dL

Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, 3 times per week