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Test Name:
Giardia Antigen, by EIA, Feces
- SBMF No:
27016 - Performance Lab Name:
Microbiology - Test Mnemonic:
GIARDIA AG - ABN:
Not required - CPT Code:
87329 - LOINC Code:
6412-1 - Also See:
27010 Ova & Parasites, Routine, Feces (Cryptosporidium and Giardia Antigens) - Spec Type:
Feces, fresh, random - Spec Container:
Yellow cap SAF collection container (contains sodium acetate, acetic acid and formalin)
Also acceptable, but not preferred: Pink capped ParaPak collection container (contains 10% buffered neutral formalin) - Pref Vol:
Sufficient fecal sample to cause solution in container to rise even with "fill line" - Patient Prep:
If necessary, acceptable to obtain samples with warm saline enema solutions or Fleet Phospho-Soda
Do not obtain samples by using enemas containing mineral oil, bismuth, iron, or magnesium compounds
Wait at least 1 week after barium procedures or laxatives before collecting O&P samples - Spec Collect:
Add amount of feces to container sufficient to cause solution level to rise even with container "fill line"
Do not over-fill – solution level must be at indicated "fill line"
Mix feces and solution in container by gentle inversion
Refer to: P-1003 Feces (Stool) Collection and Transport - Spec Store Transport:
Room temperature - Spec Stability:
2 weeks room temperature (20-30°C) - Spec Remarks:
- Do not collect more than 1 sample within 24 hours
- – Multiple sample orders (3 samples recommended): wait 24-48 hours between collection of each sample
– Multiple samples collected less than 24 hours apart will be pooled and processed as a single specimen - O&P examination is not recommended for inpatients after fourth day of hospitalization
- Methodology:
Enzyme Immunoassay (EIA) - Use:
Diagnose giardiasis - Clinical Significance:
Giardiasis can mimic acute viral enteritis, bacillary dysentery, bacterial or other food poisonings, acute intestinal amebiasis, or "traveler's diarrhea." - Reference Range:
No Giardia detected by Enzyme Immunoassay - Additional Test Info:
One negative result does not rule out a parasitic infection
Collect 1-2 more samples with 24-48 hours between each collection - Day Run:
Mon-Fri - Time Run:
Day shift - Time Reported:
4:00 pm - Test Type:
PARASITE
