LOINCActiveBoth

LOINC Code 33599-2: Amylase Unsp time (U) [Catalytic activity/Vol]

33599-2 is a LOINC code used to identify Amylase Unsp time (U) [Catalytic activity/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 Amylase. It is commonly used with the system or sample type Urine.

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 Amylase. It is commonly used with the system or sample type Urine.

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

  • Amylase [Enzymatic activity/volume] in Urine collected for unspecified duration
  • Amylase
  • ?Tm; Alpha amylase; Ams; Amyl; Catalytic Concentration; Chemistry; Diastase; Gastro; Gastroenterology; GI; k87; QNT; Quan; Quant; Quantitative; UA; UR; Urn

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

Amylase Unsp time (U) [Catalytic activity/Vol]Amylase [Enzymatic activity/volume] in Urine collected for unspecified durationAmylase ?Tm Ur-cCncAmylaseCHEMAmylase, UrineCCnc

Frequently asked questions

Code details

Code33599-2
SystemLOINC
Display nameAmylase Unsp time (U) [Catalytic activity/Vol]
DescriptionAmylase
Short nameAmylase ?Tm Ur-cCnc
ComponentAmylase
PropertyCCnc
TimingXXX
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.70

Consumer names

Amylase, Urine

Part names

AmylaseCCncXXXUrineQnCatalytic ConcentrationUnspecified

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 33599-2 | HealthAssure