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Zinc Protoporphyrin
| Item | Value |
|---|---|
| Approval req'd? | No |
| Available Stat? | No |
| Test code | ZIPP |
| Performed by | ARUP |
| Sendout? | Yes |
| Method | Quantitative Hematofluorometry |
| Collection Instructions | Wrap tube in aluminum foil to protect from light. |
| Container type | Lavender top |
| Amount to Collect | 1 mL blood |
| Sample type | EDTA whole blood |
| Preferred volume | 1 mL blood |
| Min. Volume | 0.2 mL blood |
| Processing notes | Refrigerate sample and send specimen refrigerated, ARUP test code 0020605. |
| Ref Lab Rejection Criteria | Frozen, clotted or hemolyzed sample. |
| Units | µmol ZPP/mol Hem |
| Normal range | 0-69 µmol ZPP/mol Hem Refer to current OSHA regulations for exposure criteria. |
| Synonyms | FEP; Free Erythrocyte Protoporphyrin |
| Turn around times | 3 - 5 days |
| Additional information | To convert µg/dL to µmol/L (SI units) multiply by 0.0160. This test measures total porphyrin, of which 95% is free. It is insensitive and a nonspecific test for lead poisoning, and should not be used to screen for that condition, because it is rarely abnormal at the low levels now considered hazardous for children. This test is also unsuitable for monitoring acute intermittent porphyria. Zinc Protoporphyrin (ZPP) testing is used for workplace compliance with the Occupational Safety and Health Administration, Medical Surveillance Guidelines to monitor workers for chronic lead poisoning. The test name, laboratory reference range for lead workers, and units of measure (mcg ZPP/dL blood) are in accordance with the OSHA guidelines (US Dept. of Labor, Occupational Safety and Health Administration, Standards-29 CFR, Medical Surveillance Guidelines, 1926.62 App C |
| CPT coding | 84202-90 |
| LOINC code | 2895-1 |
| Last Updated | 11/9/2012 12:15:06 PM |
| Entry Number | 962 |
If you have additional questions regarding this test, please call: 415-353-1667