What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 33199-1: Fetal body weight growth percentile by method of Arbuckle 1993 male twins (US)

Name: LOINC Code 33199-1: Fetal body weight growth percentile by method of Arbuckle 1993 male twins (US)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:20.067Z

33199-1 is a LOINC code used to identify Fetal body weight growth percentile by method of Arbuckle 1993 male twins (US) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Body weight growth percentile. It is commonly used with the system or sample type ^Fetus.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Body weight growth percentile. It is commonly used with the system or sample type ^Fetus.

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: US.estimated from Arbuckle 1993 male twins

What it does not mean

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

Key facts

Fetal body weight growth percentile by method of Arbuckle 1993 male twins (US)
Body weight growth percentile
93; Bdy weight; Bdy weight growth Prctl; bod; Bodies; BWP; by Arbuckle93 Male Twins; Echography; EFW; Est; Estimated fetal weight; estimation; Fetal; FWP; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Percentile; Point in time; predicted; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; US+est; Wt

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

Fetal body weight growth percentile by method of Arbuckle 1993 male twins (US)FWP by Arbuckle93 Male TwinsBody weight growth percentileOB.USPrctlPt^Fetus

Frequently asked questions

Code details

Code33199-1

SystemLOINC

Display nameFetal body weight growth percentile by method of Arbuckle 1993 male twins (US)

DescriptionBody weight growth percentile

Short nameFWP by Arbuckle93 Male Twins

ComponentBody weight growth percentile

PropertyPrctl

TimingPt

System (specimen)^Fetus

ScaleQn

MethodUS.estimated from Arbuckle 1993 male twins

ClassOB.US

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.70

Part names

Body weight growth percentilePrctlPt^FetusQnUS.estimated from Arbuckle 1993 male twinsPercentilePoint in time (spot)Ultrasound.estimated from Arbuckle 1993 Male Twins

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.