LOINCActiveBoth

LOINC Code 13555-8: D-pseudoephedrine Ql

13555-8 is a LOINC code used to identify D-pseudoephedrine Ql 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 D-pseudoephedrine. 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 D-pseudoephedrine. 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

  • D-pseudoephedrine [Presence] in Serum or Plasma
  • D-pseudoephedrine
  • Cenafed; Dextro; DRUG/TOXICOLOGY; Drugs; Ordinal; Pl; Plasma; Plsm; Point in time; PR; Pseudoephed; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Sudafed

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

D-pseudoephedrine QlD-pseudoephedrine [Presence] in Serum or PlasmaD-Pseudoephedrine SerPl QlD-pseudoephedrineDRUG/TOXD-pseudoephedrine, BloodPrThr

Frequently asked questions

Code details

Code13555-8
SystemLOINC
Display nameD-pseudoephedrine Ql
DescriptionD-pseudoephedrine
Short nameD-Pseudoephedrine SerPl Ql
ComponentD-pseudoephedrine
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.56

Consumer names

D-pseudoephedrine, Blood

Part names

D-pseudoephedrinePrThrPtSer/PlasOrdPresence or ThresholdPoint 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 13555-8 | HealthAssure