OXNP - Overview: Oxysterols, Plasma

Test Catalog

Test Name

Test ID: OXNP    
Oxysterols, Plasma

Useful For Suggests clinical disorders or settings where the test may be helpful

Investigation of possible diagnoses of Niemann-Pick disease type C (NPC) and types A or B (NPA or NPB) in plasma specimens


Monitoring of individuals with Niemann-Pick type C disease

Genetics Test Information Provides information that may help with selection of the correct genetic test or proper submission of the test request

This test is used to diagnose and monitor patients with Niemann-Pick types A, B, and C disease.

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

See Newborn Screen Follow-up for Niemann Pick Type A and B in Special Instructions.


For more information, see Newborn Screening Act Sheet Niemann-Pick A/B Disease: Decreased Acid Sphingomyelinase in Special Instructions.

Special Instructions and Forms Library of PDFs including pertinent information and consent forms, specimen collection and preparation information, test algorithms, and other information pertinent to test

Method Name A short description of the method used to perform the test

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter or abbreviated version of the Published Name for a test; an abbreviated test name

Oxysterols, P

Aliases Lists additional common names for a test, as an aid in searching

Niemann-Pick type A
Niemann-Pick type B
Niemann-Pick type C
Acid Schingomyelinase Deficiency
ASM Deficiency