Occipital frontal diameter estimated from gestational age by method of Chitty 1994 (US)   33179-3

LOINC Code


LOINC code33179-3
nameOccipital frontal diameter estimated from gestational age by method of Chitty 1994 (US)
statusACTIVE

Fully-Specified Name

componentOccipital frontal diameter
propertyLen  =  Length
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemHead^Fetus
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodUS.estimated from Chitty 1994

Additional Names

short nameOFD from GA.Chitty94

Basic Attributes

classOB.US
type2  Clinical
order vs. observationObservation
formula (readable)Estimated OFD = -41.58+5.50*MA-0.0009141*MA3; SD = 4.795-0.2283*MA+0.007089*MA2; Limits: 12-42 weeksOFD (mm) from 17-138
example UCUM unitsmm
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)
example unitmm

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.70
last change typeMIN  - change to field other than name

Related Names

94
Brain
Cranial
Cranium
DIA
Diam
Echoencephalogram
Echoencephalography
Echography
Est
estimation
Fetal
from GA.Chitty94
Gyn
Gynecology
Intracranial
Length
OB
ObGyn
OBSTERICAL
OBSTERICAL.ULTRASOUND
Obstetrical
Obstetrics
OFD
Point in time
predicted
QNT
Quan
Quant
Quantitative
Random
Skull
Sonogram
Sonograph
Sonography
ULS
Ultrasound
US+est

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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