LOINC Code 53299-4: Calcium phosphate crystals Computer assisted (U) [#/Vol]

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 phosphate 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: Observation
• Method: Computer assisted

What it does not mean

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

Key facts

• Calcium phosphate crystals [#/volume] in Urine by Computer assisted method
• Calcium phosphate crystals
• #; ABS; absolute; absolutes; Artificial Intelligence; Automated detection; Ca; Ca Phos; Ca Phos Cry; Cal; CAP; Cnt; Comp Assist; Count; Count/volume; Crys; Cryst; Crystal; CT; i Phos; Inorganic phosphate; Number concentration; Number Concentration (count/vol); Phos; Phosphate total; Phosphorous; Phosphorus; Phosphrous; Pi; PO4; Point in time; QNT; Quan; Quant; Quantitative; Random; UA; UR; URINALYSIS; 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

Frequently asked questions