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Test Code Billings Clinic: 8930 Mayo: HAPT Haptoglobin, Serum

Reporting Name

Haptoglobin, S

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Confirmation of intravascular hemolysis

Method Name

Nephelometry


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume:1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  14 days

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK

Reference Values

30-200 mg/dL

Interpretation

Absence of plasma haptoglobin may indicate intravascular hemolysis. However, congenital anhaptoglobinemia is common, particularly in African Americans. For this reason, it may be difficult or impossible to interpret a single measurement of plasma haptoglobin. If the assay value is low, the test should be repeated after 1 to 2 weeks following an acute episode of hemolysis. If all the plasma haptoglobin is removed following an episode of intravascular hemolysis and if hemolysis ceases, the haptoglobin concentration should return to normal in a week.

 

Low levels of plasma haptoglobin may indicate intravascular hemolysis.

Day(s) Performed

Monday through Friday

Report Available

1 to 3 days

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

83010

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HAPT Haptoglobin, S 46127-7

 

Result ID Test Result Name Result LOINC Value
HAPT Haptoglobin, S 46127-7