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LOINC Code 30550-8: Pristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio]

30550-8 is a LOINC code used to identify Pristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio] 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 Pristanate/Phytanate. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Pristanate/Phytanate. It is commonly used with the system or sample type Ser/Plas.

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

What it does not mean

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

Key facts

Pristanate (C150(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio] in Serum or Plasma
Pristanate/Phytanate
2,6,10,14-tetramethylpentadecanoate; 3,7,11,15-tetramethylhexadecanoate; C150(CH3)4; C16:0(CH3)4; Chemistry; Phytanic acid; Pl; Plasma; Plsm; Point in time; Pristanic acid; QNT; Quan; Quant; Quantitative; Random; Scrto; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration ratio; Substance ratio

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

Pristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio]Pristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio] in Serum or PlasmaPristanate/Phytanate SerPl-sRtoPristanate/PhytanateCHEMPristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4), BloodSRto

Frequently asked questions

Code details

Code30550-8
SystemLOINC
Display namePristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4) [Molar ratio]
DescriptionPristanate/Phytanate
Short namePristanate/Phytanate SerPl-sRto
ComponentPristanate/Phytanate
PropertySRto
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.73

Consumer names

Pristanate (C15:0(CH3)4)/Phytanate (C16:0(CH3)4), Blood

Part names

Pristanate/PhytanateSRtoPtSer/PlasQnSubstance RatioPoint in time (spot)Serum or Plasma

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.