LOINCActiveObservation

LOINC Code 70110-2: Number of chromosome 18 present NAA+probe (Amn fld) [#]

70110-2 is a LOINC code used to identify Number of chromosome 18 present NAA+probe (Amn fld) [#] 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 Number of chromosome 18 present. It is commonly used with the system or sample type Amnio fld.

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 Number of chromosome 18 present. It is commonly used with the system or sample type Amnio fld.

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: Probe.amp.tar

What it does not mean

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

Key facts

  • Number of chromosome 18 present [#] in Amniotic fluid by NAA with probe detection
  • Number of chromosome 18 present
  • Term created for, but not limited in use to, Gen-Probe's Elucigene QST*R Kit, a multiplexed single tube assay comprising a total of 16 markers for the detection of the 3 most common viable autosomal trisomies (13, 18 and 21).
  • # chromosome 18; 3 Self-Sustaining Sequence Replication; 3SR SR; AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Amplif; Amplification; Amplified; Chromosom; Chromosomes; Cnt; Count; DNA NUCLEIC ACID PROBE; DNA probe; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Molecular pathology; MOLPATH; NAA+probe; NAAT; NASBA; No; Nucleic acid sequence based analysis; Num; Number; PCR; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; QNT; Quan; Quant; Quantitative; Random; SDA; Strand Displacement Amplification; TMA; Transcription mediated amplification

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

Number of chromosome 18 present NAA+probe (Amn fld) [#]Number of chromosome 18 present [#] in Amniotic fluid by NAA with probe detection# chromosome 18 Amn NAA+probeNumber of chromosome 18 presentMOLPATHNumber of chromosome 18 present, Amniotic fluidNum

Frequently asked questions

Code details

Code70110-2
SystemLOINC
Display nameNumber of chromosome 18 present NAA+probe (Amn fld) [#]
DescriptionNumber of chromosome 18 present
Short name# chromosome 18 Amn NAA+probe
ComponentNumber of chromosome 18 present
PropertyNum
TimingPt
System (specimen)Amnio fld
ScaleQn
MethodProbe.amp.tar
ClassMOLPATH
Example units#
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.70

Consumer names

Number of chromosome 18 present, Amniotic fluid

Part names

Number of chromosome 18 presentNumPtAmnio fldQnProbe.amp.tarNumber (count)Point in time (spot)Amniotic fluidNucleic acid amplification with probe detection

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.