Laboratory Test Information Guide

Details for Haptoglobin, Plasma

Test Name: Haptoglobin, Plasma
Alternate Name(s): HPT
Laboratory: Core
Specimen Type: Adult:
4.5 mL Green (Lithium Heparin) top Vacutainer or 5 mL Gold top Vacutainer tube

0-2 years: 0.5 mL Light Green or Gold top (Li-Heparin) Microtainer
2-10 years: 3 mL Light Green or Gold top (Li-Heparin) Vacutainer tube
Collection Information: Collect blood aseptically in a Vacutainer tube.

Avoid hemolysis.

Serum from a 5 mL Gold top or 6 mL Red top is also acceptable.
Test Schedule: Daily
Turnaround time from when specimen
is received in testing laboratory:
4 hours
Reference Range: 0-<15 days: 0.00-0.12 g/L
15 days-<1 year: 0.00-2.38 g/L
1-<12 years: 0.00-1.76 g/L
12-<19 years: 0.00-1.93 g/L
>19 years: 0.30-2.00 g/L
Effective Date: 2010-01-11
Revised Date: 2018-08-30
Critical Value:  
Interpretive Comments: May be decreased in intravascular hemolysis and in hepatocellular damage, haptoglobin is an acute phase protein.
Special Processing:  
Comments: Turbidimetric assays not suitable for measurement of highly lipemic or hemolytic samples or samples containing high levels of circulating immune complexes.

A low plasma haptoglobin level is a very sensitive indicator of hemolysis and is slow to normalize after recovery. To monitor hemolysis, hemoglobin and lactate dehydrogenase are more useful markers. Repeat haptoglobin testing is not indicated for at least 2 weeks and may remain low even once hemoglobin has normalized.
Method of Analysis: Turbidimetry
Critical Information Required:  
Storage & Shipment: Specimen is stable for 3 months at 20-25C.
System Codes: 
Referred To:  

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