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Part Description

LP250658-4   AST to platelet ratio index
The aspartate aminotransferase (AST) to platelet ratio index (APRI) was originally published as a marker of significant fibrosis and cirrhosis in patients with hepatitis C. More recently, it has also been studied in patients with chronic hepatitis B. The APRI is calculated from two common lab results as follows: [(AST/upper limit of normal range for AST)/platelet count]x100. For cirrhosis, a score of greater than 2 is considered positive while patients with a score of less than 1 are considered unlikely to have cirrhosis. For significant fibrosis, 1.5 is used as the threshold for identifying significant fibrosis, and less than 0.5 rules it out. Other indirect indicators of liver fibrosis and cirrhosis include the FIB-4, which is based on AST, ALT, platelet count, and patient age, and the Forns index, which uses GGT, cholesterol, platelet count, and patient age. PMID: 28251119 Source: Regenstrief LOINC

LOINC Names Get Info

Fully-Specified Name
AST to platelet ratio index:Ratio:Pt:Ser+Bld:Qn:Calculated
Long Common Name
AST to platelet ratio index in Serum and Blood by calculation
Short Name
APRI Ser+Bld Calc-Rto
Display Name
AST to platelet ratio index Calc (S+Bld) [Ratio]
Consumer Name Alpha Get Info
Aspartate aminotransferase to platelet ratio index, Serum+Blood

Part Model Get Info

  • Component
    AST to platelet ratio index
    LP250658-4
    • Analyte
      AST to platelet ratio index
      LP250658-4
      • Component Numerator
        AST to platelet ratio index
        LP250658-4
        • Component Numerator Core
          AST to platelet ratio index
          LP250658-4
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Ratio
    LP6852-0
  • Time
    Pt
    LP6960-1
  • System
    Ser+Bld
    LP7568-1
    • System Core
      Ser+Bld
      LP7568-1
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    Calculated
    LP6165-7

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.61
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Both
Common Test Rank Get Info
13361

Formula (Readable)

APRI formula = [AST /AST (ULN)]/platelet count (109/L) x 100

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)APRI index (poměr AST a trombocytů):Poměr:Časový bod:Sérum a krev:Kvantitativní:Vypočteno
el-GRGreek (Greece)Δείκτης λόγου AST προς αιμοπετάλια:Ratio:Pt:Ορός+Αίμα:Qn:Υπολογιζόμενο
Synonyms: CHEM Pt Qn Ratio Αίμα Αιμοπετάλιο Δείκτης λόγου AST προς αιμοπετάλια Ορός Ορός/Αίμα Ορός+Αίμα Υπολογιζόμενο
es-ESSpanish (Spain)indice AST/PLAQUETAS (APRI):Fracción:Punto temporal:Suero y sangre:Qn:Calculado
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Índice de relación de AST a plaquetas:Proporción:Punto temporal:Suero y sangre:Cuantitativo:Calculado
fr-FRFrench (France)Score APRI:Ratio:Ponctuel:Sérum+Sang:Numérique:Résultat calculé
it-ITItalian (Italy)Indice del rapporto AST/piastrine:Rapporto:Pt:Siero+Sangue:Qn:Calcolato
Synonyms: Chimica Piastrine Punto nel tempo (episodio) Sangue Siero Siero & Sangue Siero o Sangue
nl-NLDutch (Netherlands)AST naar plaatjes ratio index:verhouding:moment:serum en bloed:kwantitatief:berekend
pl-PLPolish (Poland)Wskaźnik stosunku AST do płytek krwi:współczynnik:punkt w czasie:surowica i krew:ilościowy:obliczony
Synonyms: Wskaźnik stosunku aminotransferazy asparaginianowej do płytek krwi;Wskaźnik APRI
zh-CNChinese (China)天冬氨酸氨基转移酶与血小板比值指数:比率:时间点:血清+全血:定量型:计算法
Synonyms: AST to Platelet Ratio Index;APRI;谷草转氨酶与血小板比值指数;AST与血小板比值指数;AST/血小板比值指数;AST/PLT比值指数;AST/PLT指数 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 来自于不同体系的两个观察指标之比;比;比值 血;血液 血栓细胞 血清 & 全血;血清 & 血液;血清+血液;血清与全血;血清与血液 血清/血液;血清或全血;血清或血液 计算;计算型方法

Example Units

UnitSource
%Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=86465-2