LOINCActiveBoth

LOINC Code 32153-9: Alpha-Phenyl-2-Piperidine acetate [Mass/Vol]

32153-9 is a LOINC code used to identify Alpha-Phenyl-2-Piperidine acetate [Mass/Vol] 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 Alpha-Phenyl-2-Piperidine acetate. It is commonly used with the system or sample type Ser/Plas.

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 Alpha-Phenyl-2-Piperidine acetate. It is commonly used with the system or sample type Ser/Plas.

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: Both

What it does not mean

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

Key facts

Alpha-Phenyl-2-Piperidine acetate [Mass/volume] in Serum or Plasma
Alpha-Phenyl-2-Piperidine acetate
This is from Teton"Methylphenidate is metabolized primarily by de-esterification to ritalinic acid (a-phenyl-2-piperidine acetic acid, PPAA), which has little to no pharmacologic activity."
Acetic acid; Alfa; Alpha-phenyl-2-piperidine acetic acid; DRUG/TOXICOLOGY; Drugs; Ethanoate; Ethanoic acid; II; Level; Mass concentration; Methylphenidate metabolite; Phenylpiperidine acetate; Phenylpiperidine acetic acid; Pl; Plasma; Plsm; Point in time; PPAA; QNT; Quan; Quant; Quantitative; Random; Ritalinate; Ritalinic acid; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Alpha-Phenyl-2-Piperidine acetate [Mass/Vol]Alpha-Phenyl-2-Piperidine acetate [Mass/volume] in Serum or PlasmaPPAA SerPl-mCncAlpha-Phenyl-2-Piperidine acetateDRUG/TOXAlpha-Phenyl-2-Piperidine acetate, BloodMCnc

Frequently asked questions

Code details

Code32153-9
SystemLOINC
Display nameAlpha-Phenyl-2-Piperidine acetate [Mass/Vol]
DescriptionAlpha-Phenyl-2-Piperidine acetate
Short namePPAA SerPl-mCnc
ComponentAlpha-Phenyl-2-Piperidine acetate
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassDRUG/TOX
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.73

Consumer names

Alpha-Phenyl-2-Piperidine acetate, Blood

Part names

Alpha-Phenyl-2-Piperidine acetateMCncPtSer/PlasQnMass ConcentrationPoint in time (spot)Serum or Plasma

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.

LOINC Code 32153-9 | HealthAssure