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HelpTest Code IEHCG Interference Evaluation Heterophile, Beta-Human Chorionic Gonadotropin, Serum
Additional Codes
| Hospital Order Code |
| Lab2608 MISMGO |
Ordering Guidance
If "HCG Total OB" or pregnancy is indicated, order THCG / Human Chorionic Gonadotropin (hCG), Quantitative, Pregnancy, Serum.
Specimen Required
Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 2.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Useful For
Evaluating suspected interference from heterophile antibodies causing a falsely elevated human chorionic gonadotropin result
This test is not to be used for pregnancy testing.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| HCGII | HCG, Interference Interpretation | No | Yes |
| HCGQN | Beta-HCG, Quantitative, S | Yes, (order BHCG) | Yes |
| HCGAM | HCG, Alternative Method, S | No | Yes |
Method Name
HCGII: Medical Interpretation
HCGQN: Electrochemiluminescent Immunoassay
HCGAM: Immunoenzymatic Assay
Reporting Name
Interference Eval, Heterophile, HCGSpecimen Type
SerumSpecimen Minimum Volume
1.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 90 days | |
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Day(s) Performed
Monday through Saturday
Report Available
2 to 4 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
84702 x 2
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| IEHCG | Interference Eval, Heterophile, HCG | 99306-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| HCGQN | Beta-HCG, Quantitative, S | 21198-7 |
| HCGAM | HCG, Alternative Method, S | 21198-7 |
| HCGIF | HCG, Interference Heterophile | 99307-1 |
| HCGIN | HCG, Interpretation | 77202-0 |