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HelpTest Code HQ HemoQuant, Feces
Additional Codes
Mayo Test Code: HQ
Reporting Name
Hemoquant, FUseful 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
FecalSpecimen 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
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.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 |
Cautions
Heme from ingested red meat will increase HemoQuant test values. Patients should be advised to avoid eating red meat for 3 days before collecting specimens. Fish and poultry may be substituted.
The elevated porphyrins of lead intoxication, erythrocytic protoporphyria and variegate porphyria may raise HemoQuant values in the absence of gut bleeding.
Recent studies have indicated that cancerous lesions in their early stages often do not bleed or bleed only intermittently.
Specimen Retention Time
14 daysReject Due To
| Gross hemolysis | OK |
Method Name
Fluorescence Quantitation
Day(s) Performed
Monday through Saturday