What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 45385-2: Hippurate crystals LM.LPF (Urine sed) [#/Area]

Name: LOINC Code 45385-2: Hippurate crystals LM.LPF (Urine sed) [#/Area]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

45385-2 is a LOINC code used to identify Hippurate crystals LM.LPF (Urine sed) [#/Area] 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 Hippurate crystals. It is commonly used with the system or sample type Urine sed.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Hippurate crystals. It is commonly used with the system or sample type Urine sed.

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: Observation
Method: Microscopy.light.LPF

What it does not mean

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

Key facts

Hippurate crystals [#/area] in Urine sediment by Microscopy low power field
Hippurate crystals
#/area; Benzyl alcohol metabolite; Crys; Cryst; Crystal; Hipp; Hippramine; Hippuran; Hippuric acid; Hiprex; HIP-REX; Kidney; LM; Micro; Micros; Microscopic; Nephrology; Number areic; Point in time; QNT; Quan; Quant; Quantitative; Random; Renal; Toluene metabolite; UA; UR; Urex; URINALYSIS; Urine sediment; Urn; UrnS; Urotractan

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Hippurate crystals LM.LPF (Urine sed) [#/Area] (45385-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Hippurate crystals LM.LPF (Urine sed) [#/Area]Hippurate crystals [#/area] in Urine sediment by Microscopy low power fieldHippurate Cry #/area UrnS LPFHippurate crystalsUAHippurate crystals, Urine sedimentNaric

Frequently asked questions

Code details

Code45385-2

SystemLOINC

Display nameHippurate crystals LM.LPF (Urine sed) [#/Area]

DescriptionHippurate crystals

Short nameHippurate Cry #/area UrnS LPF

ComponentHippurate crystals

PropertyNaric

TimingPt

System (specimen)Urine sed

ScaleQn

MethodMicroscopy.light.LPF

ClassUA

Example units/LPF

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.70

Consumer names

Hippurate crystals, Urine sediment

Part names

Hippurate crystalsNaricPtUrine sedQnMicroscopy.light.LPFNumber Areic (per area)Point in time (spot)Urine sedimentMicroscopy low power field

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.