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LOINC Code 93704-5: Palmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel (WBC)

93704-5 is a LOINC code used to identify Palmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel (WBC) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Palmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel. It is commonly used with the system or sample type WBC.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Palmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel. It is commonly used with the system or sample type WBC.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Order
  • Panel type: Panel

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Palmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel - Leukocytes
Palmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel
This panel is used to help differentiate between forms of neuronal ceroid lipufuscinoses (CLNs), which are progressive, neurodegenerative lysosomal storage diseases. CLN1 and CLN2 are caused by mutations in the PPT1 gene, which encodes palmitoyl protein thioesterase 1, and TPP1, which encodes tripeptidyl peptidase 1, respectively. Both are associated with seizures, dementia, and vision loss. [UniProtO14773][UniProt: P50897]
Chemistry; i; Leukocytes; Pan; PANEL.CHEMISTRY; Panl; Pnl; Point in time; PPT; PPT1 + TPP1 Pnl; PR; Prot; Random; WBCs; White blood cells

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Palmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel (WBC)Palmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel - LeukocytesPPT1 + TPP1 Pnl WBCPalmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panelPANEL.CHEMPalmitoyl protein Thioesterase 1 and Tripeptidyl peptidase 1 panel, White blood cells-

Frequently asked questions

Code details

Code93704-5
SystemLOINC
Display namePalmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panel (WBC)
DescriptionPalmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel
Short namePPT1 + TPP1 Pnl WBC
ComponentPalmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel
Property-
TimingPt
System (specimen)WBC
Scale-
ClassPANEL.CHEM
StatusACTIVE
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.67
Last changed2.67

Consumer names

Palmitoyl protein Thioesterase 1 and Tripeptidyl peptidase 1 panel, White blood cells

Part names

Palmitoyl protein thioesterase 1 & Tripeptidyl peptidase 1 panel-PtWBCPalmitoyl protein thioesterase 1 and Tripeptidyl peptidase 1 panelPoint in time (spot)White blood cells

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.