Test ID: PTP
Porphyrins, Total, Plasma
NY State Approved 
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Useful For Suggests clinical disorders or settings where the test may be helpful
Differential diagnosis of porphyrias
Differential diagnosis of photosensitive skin manifestations
Determining whether skin problems are related to an accumulation of porphyrins (renal failure porphyria, porphyria cutanea tarda, congenital erythropoietic porphyria, and erythropoietic protoporphyria) or some other problem
Genetics Test Information Provides information that may help with selection of the correct test or proper submission of the test request
Plasma specimens from patients with active porphyria cutanea tarda (PCT), congenital erythropoietic porphyria (CEP), and erythropoietic protoporphyria (EPP) may exhibit increased plasma porphyrin levels. However, a definitive diagnosis cannot be made by plasma analysis alone.
Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| PFP | Porphyrins, Fractionation, P | No | No |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
If total porphyrins are >1.0 mcg/dL, then PFP/8733 Porphyrins, Fractionation, Plasma will be performed at an additional charge.
The following algorithms are available in Special Instructions:
-Porphyria (Acute) Testing Algorithm
-Porphyria (Cutaneous) Testing Algorithm
-The Heme Biosynthetic Pathway
Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test
Method Name A short description of the method used to perform the test
PTP/8731: Extraction and Scanning Spectrofluorometry
PFP/8733: High-Performance Liquid Chromatography (HPLC)
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Aliases Lists additional common names for a test, as an aid in searching
Congenital Erythropoietic Porphyria (CEP)
Coproporphyrin
EPP (Erythropoietic Protoporphyria)
Erythropoietic Protoporphyria (EPP)
PCT (Porphyria Cutanea Tarda)
Porphyria Cutanea Tarda (PCT)
Protoporphyrin
Uroporphyrin
External
link
PDF
document
Excel
document
Word
document