LOINC Code 71830-4: Hematocrit Calc (BldMV) [Pure volume fraction]

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 Erythrocyte/Specimen Volume. It is commonly used with the system or sample type BldMV.

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: Calculated

What it does not mean

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

Key facts

• Hematocrit [Pure volume fraction] of Mixed venous blood by calculation
• Erythrocyte/Specimen Volume
• Because of the confusion that occurs in countries that report results as both decimal fraction and percent, this property was created to represent decimal fractions that are reported without units.
• Bld mixed venous; Blood - mixed venous; Calc; Calculation; Discocyte; Erc; Erythrocytes; HEMATOLOGY/CELL COUNTS; Point in time; QNT; Quan; Quant; Quantitative; Random; RBC; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Spec; Vol

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