LOINCActiveBoth

LOINC Code 59001-8: Amylase (18H U) [Catalytic activity/Time]

59001-8 is a LOINC code used to identify Amylase (18H U) [Catalytic activity/Time] 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/time] in 18 hour Urine
  • Amylase
  • 18 hours; 18HR; Alpha amylase; Ams; Amyl; Catalytic Rate; Chemistry; cRate; 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 (18H U) [Catalytic activity/Time]Amylase [Enzymatic activity/time] in 18 hour UrineAmylase 18h Ur-cRateAmylaseCHEMAmylase, UrineCRat

Frequently asked questions

Code details

Code59001-8
SystemLOINC
Display nameAmylase (18H U) [Catalytic activity/Time]
DescriptionAmylase
Short nameAmylase 18h Ur-cRate
ComponentAmylase
PropertyCRat
Timing18H
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsU/18 H
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.70

Consumer names

Amylase, Urine

Part names

AmylaseCRat18HUrineQnCatalytic Rate18 hours

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 59001-8 | HealthAssure