LOINC Code 33666-9: RBC.dysmorphic LM (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 Erythrocytes.dysmorphic. 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
• Method: Microscopy.light

What it does not mean

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

Key facts

• Erythrocytes.dysmorphic [#/volume] in Urine by Light microscopy
• Erythrocytes.dysmorphic
• These are the erythrocytes shown by Fairley as being associated with Glomerular bleeding
• #; ABS; absolute; absolutes; Cnt; Count; Count/volume; CT; D Cells; DE; Discocytes; Dysmorphic RBC; Erthrocyte; Erythrocyte; Glomerular erythrocytes; LM; Micro; Micros; Microscopic; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; 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