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.

LOINCActiveBoth

LOINC Code 101736-7: Calcium hydrogen phosphate dihydrate crystals (24H U) [Energy diff]

Name: LOINC Code 101736-7: Calcium hydrogen phosphate dihydrate crystals (24H U) [Energy diff]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:17.028Z

101736-7 is a LOINC code used to identify Calcium hydrogen phosphate dihydrate crystals (24H U) [Energy diff] 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 Calcium hydrogen phosphate dihydrate crystals. 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 Calcium hydrogen phosphate dihydrate crystals. 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

Calcium hydrogen phosphate dihydrate crystals [Energy Difference] in 24 hour Urine

Calcium hydrogen phosphate dihydrate crystals

Calcium hydrogen phosphate dihydrate (CHPD) is found quite frequently in urinary calculi (stones). The CHPD crystals were grown by the single diffusion gel growth technique in sodium metasilicate gel (https//link.springer.com/article/10.1007/s10973-008-9841-1)

1 day; 24 hours; 24HR; Brushite; Brushite crystals; Ca; Ca H2 Phos dihyd; Ca H2 Phos dihyd Cry; Cal; Chemistry; CHPD; Crys; Cryst; Crystal; H2; Hyd; i Phos; Inorganic phosphate; Phos; Phosphate total; Phosphorous; Phosphorus; Phosphrous; Pi; PO4; 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

Calcium hydrogen phosphate dihydrate crystals (24H U) [Energy diff]Calcium hydrogen phosphate dihydrate crystals [Energy Difference] in 24 hour UrineCa H2 Phos dihyd Cry 24h EngDiff UrCalcium hydrogen phosphate dihydrate crystalsCHEMBrushite crystals 24Hr UrineEngDiff

Frequently asked questions

Code details

Code101736-7

SystemLOINC

Display nameCalcium hydrogen phosphate dihydrate crystals (24H U) [Energy diff]

DescriptionCalcium hydrogen phosphate dihydrate crystals

Short nameCa H2 Phos dihyd Cry 24h EngDiff Ur

ComponentCalcium hydrogen phosphate dihydrate crystals

PropertyEngDiff

Timing24H

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitskJ/mol

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.75

Last changed2.82

Consumer names

Brushite crystals 24Hr Urine

Part names

Calcium hydrogen phosphate dihydrate crystalsEngDiff24HUrineQnEnergy Difference24 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.