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Order Code LAB1966 HemoQuant, Feces

Reporting Name

Hemoquant, F

Useful For

Detection of blood in feces

 

Evaluation of iron deficiency

 

Detection of bleeding as a complication of anticoagulant therapy and other medication regimens

 

This test is not specific for bowel cancer.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Fecal


Specimen Required


Patient Preparation: Patient should refrain from ingesting red meat and aspirin-containing products (eg, Excedrin, Aspirin) for 3 days prior to specimen collection.

Collection Container/Tube: Hemoquant Specimen Collection (T134)

Submission Container/Tube: Screw-capped tube

Specimen Volume: 1 g

Collection Instructions: Collect random specimen from a single defecation.


Specimen Minimum Volume

1 g

Specimen Stability Information

Specimen Type Temperature Time
Fecal Refrigerated (preferred) 7 days
  Ambient  7 days
  Frozen 

Reference Values

Normal:

≤2.0 mg total hemoglobin/g feces

 

Marginal:

2.1-4.0 mg total hemoglobin/g feces*

*2.1-4.0 mg Hb/g is considered marginally elevated, but not clinically significant, if red meat, warfarin, or aspirin was ingested 72 hours prior to collection.

 

Elevated:

>4.0 mg total hemoglobin/g feces

CPT Code Information

84126

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HQ Hemoquant, F 27396-1

 

Result ID Test Result Name Result LOINC Value
2410 Fecal Hemoglobin 27396-1

Method Description

Hemoglobin and the heme released by hemoglobin degradation are converted to porphyrins. These porphyrins are quantified by fluorescence measurement after extraction of any interfering fluorescing substances.(Schwartz S, Dahl J, Ellefson M, Ahlquist D. The "HemoQuant" test: a specific and quantitative determination of heme [hemoglobin] in feces and other materials. Clin Chem 1983;29[12]:2061-2067)

Reject Due To

Gross hemolysis OK

Method Name

Fluorescence Quantitation

Day(s) Performed

Monday through Saturday