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Parasites, Stool
| Item | Value | ||||
|---|---|---|---|---|---|
| Approval req'd? | Yes, contact Microbiology at x3-1268 for test requests on patients > 72 hours after admission. | ||||
| Available Stat? | No | ||||
| Test code | P401 | ||||
| Test group | Parasites | ||||
| Performed by | Microbiology | ||||
| In House Availability | Monday-Friday, day shift | ||||
| Method | Microscopy | ||||
| Patient Preparation | Patient should be off ALL antibiotics for ≥ 2 weeks before for an O&P examination to be valid. | ||||
| Collection Instructions | SAF tubes and instructions available from the 1st floor ACC draw station, 2330 Post St draw station, 5th floor lab at Parnassus and 2nd floor lab at MtZ. Patient should be off ALL antibiotics for ≥ 2 weeks before for an O&P examination. Collect 3 samples (no more than one per 48 hours) to improve the chance of a positive result. |
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| Container type |
SAF tubes and instructions available from the 1st floor ACC draw station, 2330 Post St draw station, 5th floor lab at Parnassus and 2nd floor lab at MtZ. |
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| Amount to Collect | See preferred volume | ||||
| Sample type | Stool ("O&P") | ||||
| Preferred volume | 10 mL stool Note: for SAF vial fill to red line on container label |
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| Min. Volume | 5 mL stool Note: for SAF vial fill to red line on container label |
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| UCSF Rejection Criteria | Unpreserved stool received > 1 hour after collection. Stool in a preservative other than SAF. More than one sample received within 24 hours. Stool not mixed well in SAF, or if preservative has been poured out. SAF container filled past the red line on the container label | ||||
| Processing notes | Transfer unpreserved stool to SAF preservative upon receipt in lab. | ||||
| Normal range | Negative | ||||
| Synonyms | Ova & Parasites; O&P; scolex; Protozoan concentration; Coccidia | ||||
| Stability | Unpreserved 1 hour, preserved 2 weeks | ||||
| Turn around times | 1-3 days | ||||
| Additional information | Includes concentration and iron-hematoxylin smear, and Kinyoun stain of unconcentrated sample for Cyclospora and Cryptosporidia. Also see entries for Giardia lamblia Antigen, Cryptosporidium and Cyclospora, and Microsporidia. |
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| CPT coding | 87177, 88313, 87206 | ||||
| LOINC code | 10704-5 | ||||
| Last Updated | 8/27/2012 12:36:15 PM | ||||
| Entry Number | 719 |
If you have additional questions regarding this test, please call: 415-353-1667