Tripeptidyl Peptidase 1 (TPP1) and Palmitoyl-Protein Thioesterase 1 (PPT1), Leukocytes
| Abbrev Code: | MMMISC | ||
| Order Code: | LAB4909 | Order Name: | Send Outs Misc Test |
| Synonyms: | TPP1 and PPT1, WBC | ||
| Methodology: | Fluorometric | ||
| CPT Codes: | 82657 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Thur before 1300; results are reported within 8-15 days. | ||
| Special Instructions: |
A signed informed consent in the patient's medical record is required; the consent should not be sent to the laboratory. See Associated Links. Specimen must arrive refrigerated within 144 hours of draw to be stabilized. Draw specimen Mon-Thur only and do not send the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible.
Specimen must arrive refrigerated within 144 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before a holiday. Specimen should be drawn and packaged as close to shipping time as possible.
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| Compliance: | This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration. |
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| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 6 mL |
| Minimum\Peds Volume: | 5 mL |
| Container: | Yellow (ACD, Solution A) tube available from laboratory Alternate Containers: Yellow (ACD, Solution B) tube available from laboratory |
| Causes for Rejection: | Gross hemolysis. |
Processing and Shipping
| Specimen Processing: | Do not process. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature (preferred). |
| Stability: | 72 hours at room temperature; 6 days refrigerated. |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo Medical Laboratories) |
| Referral Lab number: | TPPTL |
Interpretive
| Reference Range: |
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| Use: | Tripeptidyl peptidase 1 (TPP1) and palmitoyl-protein thioesterase 1 (PPT1) enzyme activity below 5 nmol/hour/mg of protein are highly suggestive of late-infantile and infantile neuronal ceroid lipofuscinoses, respectively. |
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