00937
Kind of Quantity Observed
2020-01-06
Definitions: This optional attribute describes the underlying kind of property represented by this observation. This attribute distinguishes concentrations from total amounts, molar concentrations from mass concentrations, partial pressures from colors, and so forth. These are discussed more fully in the LOINC Users' Manual. They are derived from the approach described in 1995 edition of the IUPAC Silver Book. These distinctions are used in IUPAC and LOINC standard codes. Defined categories are listed in HL7 Table 0254 - Kind of Quantity in Chapter 2C, Code Tables.
The distinctions of true quantities in this table are based primarily on dimensional analyses. The table contains a number of "families," those related to simple counts (number, number concentration, etc.), to mass (mass, mass concentration, etc.), to enzyme activity (catalytic content, catalytic concentration, etc.), and molar or equivalents (substance content, substance concentration).
LengthNot specified
102 values
ABS | Absorbance |
ACNC | Concentration, Arbitrary Substance |
ACT | Activity |
APER | Appearance |
ARB | Arbitrary |
AREA | Area |
ASPECT | Aspect |
CACT | Catalytic Activity |
CCNT | Catalytic Content |
CCRTO | Catalytic Concentration Ratio |
CFR | Catalytic Fraction |
CLAS | Class |
CNC | Catalytic Concentration |
CNST | Constant |
COEF | Coefficient |
COLOR | Color |
CONS | Consistency |
CRAT | Catalytic Rate |
CRTO | Catalytic Ratio |
DEN | Density |
DEV | Device |
DIFF | Difference |
ELAS | Elasticity |
ELPOT | Electrical Potential (Voltage) |
ELRAT | Electrical current (amperage) |
ELRES | Electrical Resistance |
ENGR | Energy |
ENT | Entitic |
ENTCAT | Entitic Catalytic Activity |
ENTNUM | Entitic Number |
ENTSUB | Entitic Substance of Amount |
ENTVOL | Entitic Volume |
EQL | Equilibrium |
FORCE | Mechanical force |
FREQ | Frequency |
IMP | Impression/ interpretation of study |
KINV | Kinematic Viscosity |
LEN | Length |
LINC | Length Increment |
LIQ | Liquefaction |
MASS | Mass |
MCNC | Mass Concentration |
MCNT | Mass Content |
MCRTO | Mass Concentration Ratio |
MFR | Mass Fraction |
MGFLUX | Magnetic flux |
MINC | Mass Increment |
MORPH | Morphology |
MOTIL | Motility |
MRAT | Mass Rate |
MRTO | Mass Ratio |
NCNC | Number Concentration |
NCNT | Number Content |
NFR | Number Fraction |
NRTO | Number Ratio |
NUM | Number |
OD | Optical density |
OSMOL | Osmolality |
PRES | Pressure (Partial) |
PRID | Presence/Identity/Existence |
PWR | Power (wattage) |
RANGE | Ranges |
RATIO | Ratios |
RCRLTM | Reciprocal Relative Time |
RDEN | Relative Density |
REL | Relative |
RLMCNC | Relative Mass Concentration |
RLSCNC | Relative Substance Concentration |
RLTM | Relative Time |
SATFR | Saturation Fraction |
SCNC | Substance Concentration |
SCNCIN | Substance Concentration Increment |
SCNT | Substance Content |
SCNTR | Substance Content Rate |
SCRTO | Substance Concentration Ratio |
SFR | Substance Fraction |
SHAPE | Shape |
SMELL | Smell |
SRAT | Substance Rate |
SRTO | Substance Ratio |
SUB | Substance Amount |
SUSC | Susceptibility |
TASTE | Taste |
TEMP | Temperature |
TEMPDF | Temperature Difference |
TEMPIN | Temperature Increment |
THRMCNC | Threshold Mass Concentration |
THRSCNC | Threshold Substance Concentration |
TIME | Time (e.g. seconds) |
TITR | Dilution Factor (Titer) |
TMDF | Time Difference |
TMSTP | Time Stamp-Date and Time |
TRTO | Time Ratio |
TYPE | Type |
VCNT | Volume Content |
VEL | Velocity |
VELRT | Velocity Ratio |
VFR | Volume Fraction |
VISC | Viscosity |
VOL | Volume |
VRAT | Volume Rate |
VRTO | Volume Ratio |
22 components
| 1 | O | - | Identifier | |
| 2 | O | - | Text | |
| 3 | C | Name of Coding System | ||
| 4 | O | - | Alternate Identifier | |
| 5 | O | - | Alternate Text | |
| 6 | C | Name of Alternate Coding System | ||
| 7 | C | - | Coding System Version ID | |
| 8 | O | - | Alternate Coding System Version ID | |
| 9 | O | - | Original Text | |
| 10 | O | - | Second Alternate Identifier | |
| 11 | O | - | Second Alternate Text | |
| 12 | C | Name of Second Alternate Coding System | ||
| 13 | O | - | Second Alternate Coding System Version ID | |
| 14 | C | - | Coding System OID | |
| 15 | O | - | Value Set OID | |
| 16 | C | - | Value Set Version ID | |
| 17 | C | - | Alternate Coding System OID | |
| 18 | O | - | Alternate Value Set OID | |
| 19 | C | - | Alternate Value Set Version ID | |
| 20 | C | - | Second Alternate Coding System OID | |
| 21 | O | - | Second Alternate Value Set OID | |
| 22 | C | - | Second Alternate Value Set Version ID |