33877-2

LOINC 2.82

Tetrahydrobiopterin/Biopterin in Urine

Biopterin H4/Biopterin SFr Ur

Definition

  • A low %BH4 is characteristic of dihydropteridine reductase deficiency, which leads to phenylalanine hydroxylase deficiency, which lesds to phenylketonuria

Component

  • Tetrahydrobiopterin/Biopterin

Specimen / system

  • Urine

Class

  • CHEM

Property

  • SFr

Scale

  • Qn

Related names

  • BH4; BH4 deficiency; BIOPT; Biopterin deficiency; Biopterin H4; Chemistry; Hyperphenylalaninaemia; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Substance fraction; UA; UR; Urn

Index terms

  • BH4
  • BH4 deficiency
  • BIOPT
  • Biopterin deficiency
  • Biopterin H4
  • Chemistry
  • Hyperphenylalaninaemia
  • Percent
  • Point in time
  • QNT
  • Quan
  • Quant
  • Quantitative
  • Random
  • Substance fraction
  • UA
  • UR
  • Urn