18185-9 Gestational age

Part Descriptions

LP19507-0   Gestational age
The age of the conceptus, beginning from the time of fertilization. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last menstruation which is about 2 weeks before ovulation and fertilization. Source: National Library of Medicine, MeSH 2006

Reference Information

Observation Required in Panel

Optional

Type of Entry

Question expects user entry - requires response [Q]

Fully-Specified Name

Component

Gestational age

Property

Time

Time

Pt

System

^Fetus

Scale

Qn

Method

Basic Attributes

Class

OB.US

Type

Clinical

First Released

Version 1.0l

Last Updated

Version 2.73 (MIN)

Order vs. Observation

Observation

Common Test Rank Get Info

1105

Member of these Panels

Member of these Groups Get Info

Language Variants Get Info

Related Names

• Fetal
• GA
• Gest
• Gestation
• Gyn
• Gynecology
• OB
• ObGyn
• OBSTERICAL
• OBSTERICAL.ULTRASOUND
• Obstetrical
• Obstetrics
• Point in time
• Prenatal
• QNT
• Quan
• Quant
• Quantitative
• Random

Example Units

Related Codes

30106-9 Acetylcholinesterase [Presence] in Amniotic fluid

Part Descriptions

LP15315-2   Acetylcholinesterase
An enzyme that catalyzes the hydrolysis of ACETYLCHOLINE to CHOLINE and acetate. In the CNS, this enzyme plays a role in the function of peripheral neuromuscular junctions. EC 3.1.1.7. Source: National Library of Medicine, MeSH 2006

LP15315-2   Acetylcholinesterase
Acetylcholinesterase, an enyzme (EC 3.1.1.7) (AChE) that controls synaptic and neurohumoral cholinergic activity by hydrolyzing the neurotransmitter acetylcholine, is also known as RBC cholinesterase, erythrocyte cholinesterase, or (most formally) acetylcholine acetylhydrolase. The ACHE gene is mapped to chromosome 7q22. AChE is found primarily in the blood on red blood cell membranes, in neuromuscular junctions, and in neural synapses. Two main clinical diagnostic uses are: 1) a second trimester screening test for fetal neural tube defects using amniotic fluid and, 2) in the general population, to detect past exposure to organophosphate insecticides with resultant inhibition of the enzyme using blood. Source: Regenstrief LOINC, Acetylcholinesterase

Observation Required in Panel

Required

Fully-Specified Name

Component

Acetylcholinesterase

Property

PrThr

Time

Pt

System

Amnio fld

Scale

Ord

Method

Basic Attributes

Class

CHEM

Type

Laboratory

First Released

Version 2.04

Last Updated

Version 2.73 (MIN)

Change Reason

The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.

Order vs. Observation

Both

Common Test Rank Get Info

7766

Example Answer List LL360-9

Member of these Panels

Language Variants Get Info

Related Names

• Acetycholinesterase
• Acetylcholine acetylhydrolase
• Acetylhydrolase
• AChE
• ACLE
• AF
• Amn
• Amn fl
• Amnio
• Amniotic flu
• Amniotic fluid
• Chemistry
• Choline esterase I
• Cholinesterase true
• Erythrocyte cholinesterase
• Ordinal
• Point in time
• PR
• QL
• Qual
• Qualitative
• Random
• RBC cholinesterase
• Screen

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76479-5 Acetylcholinesterase [Interpretation] in Amniotic fluid Narrative

Term Description

An interpretation of the acetylcholinesterase (AChE) in amniotic fluid testing result which is used as an aid to diagnose open neural tube defect (NDT) and ventral wall defects. The two most common neural tube defects are spina bifida and anencephaly. When an NTD is suspected based upon maternal serum alpha-fetoprotein (AFP) screening results, or diagnosed via ultrasound, detection of acetylcholinesterase (AChE) in amniotic fluid is a useful diagnostic tool as normal amniotic fluid does not contain AChE, unless from the fetus as a result of an open NTD. The patient's gestational age must be at least 13 weeks (second trimester) for accurate AChE detection. Optimal gestational age is 14 to 18 weeks. If acetylcholinesterase is present genetic consultation and high-resolution ultrasound may be suggested.

Part Descriptions

LP15315-2   Acetylcholinesterase
An enzyme that catalyzes the hydrolysis of ACETYLCHOLINE to CHOLINE and acetate. In the CNS, this enzyme plays a role in the function of peripheral neuromuscular junctions. EC 3.1.1.7. Source: National Library of Medicine, MeSH 2006

LP15315-2   Acetylcholinesterase
Acetylcholinesterase, an enyzme (EC 3.1.1.7) (AChE) that controls synaptic and neurohumoral cholinergic activity by hydrolyzing the neurotransmitter acetylcholine, is also known as RBC cholinesterase, erythrocyte cholinesterase, or (most formally) acetylcholine acetylhydrolase. The ACHE gene is mapped to chromosome 7q22. AChE is found primarily in the blood on red blood cell membranes, in neuromuscular junctions, and in neural synapses. Two main clinical diagnostic uses are: 1) a second trimester screening test for fetal neural tube defects using amniotic fluid and, 2) in the general population, to detect past exposure to organophosphate insecticides with resultant inhibition of the enzyme using blood. Source: Regenstrief LOINC, Acetylcholinesterase

Observation Required in Panel

Required

Fully-Specified Name

Component

Acetylcholinesterase

Property

Imp

Time

Pt

System

Amnio fld

Scale

Nar

Method

Basic Attributes

Class

CHEM

Type

Laboratory

First Released

Version 2.52

Last Updated

Version 2.73 (MIN)

Order vs. Observation

Observation

Common Test Rank Get Info

15145

Member of these Panels

Language Variants Get Info

Related Names

• Acetycholinesterase
• Acetylcholine acetylhydrolase
• Acetylhydrolase
• AChE
• ACLE
• AF
• Amn
• Amn fl
• Amnio
• Amniotic flu
• Amniotic fluid
• Chemistry
• Choline esterase I
• Cholinesterase true
• Erythrocyte cholinesterase
• Impression
• Impression/interpretation of study
• Impressions
• Interp
• Interpretation
• Narrative
• Point in time
• Random
• RBC cholinesterase
• Report

4576-5 Hemoglobin F/Hemoglobin.total in Blood

Part Descriptions

LP16428-2   Hemoglobin F
Hemoglobin F is used to screen for fetal-to-maternal hemorrrhage. The presence of fetal red cells in the maternal circulation may be identified by use of the acid elution principle first described by Kleihauer, Brown, and Betke, or by several modifications. Very small volumes of red cells commonly escape from the fetal intravascular compartment across the placental barrier into the maternal intervillous space. Source: Regenstrief Institute

Observation Required in Panel

Reflex with alternatives

Fully-Specified Name

Component

Hemoglobin F/Hemoglobin.total

Property

MFr

Time

Pt

System

Bld

Scale

Qn

Method

Basic Attributes

Class

HEM/BC

Type

Laboratory

First Released

Version 1.0

Last Updated

Version 2.73 (MIN)

Order vs. Observation

Observation

Common Test Rank Get Info

1597

Member of these Panels

Language Variants Get Info

Related Names

• Blood
• Fetal hemoglobin
• Haemoglobin
• Hb
• HbF
• HEMATOLOGY/CELL COUNTS
• Hgb
• Hgb F
• Mass Fraction
• Percent
• Point in time
• QNT
• Quan
• Quant
• Quantitative
• Random
• Tot
• Totl
• WB
• Whole blood

Example Units