LOINC

LOINC Code 1669-1: 17-Hydroxyprogesterone (S) [Mass/Vol]

1669-1 is a LOINC code used to identify 17-Hydroxyprogesterone (S) [Mass/Vol] 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 17-Hydroxyprogesterone. It is commonly used with the system or sample type Ser.

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 17-Hydroxyprogesterone. It is commonly used with the system or sample type Ser.

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: DEPRECATED

What it does not mean

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

Key facts

  • Deprecated 17-Hydroxyprogesterone [Mass/volume] in Serum
  • 17-Hydroxyprogesterone
  • 17-alpha-hydroxyprogesterone; 17-Hydroxypregn-4-en-3,20-dione; 17-hydroxy-progest; 17-OH Progesterone; 17OHP; 17-OHP; 17-P; Chemistry; Hydroxyproges; Hydroxyprogstron; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

17-Hydroxyprogesterone (S) [Mass/Vol]Deprecated 17-Hydroxyprogesterone [Mass/volume] in SerumDeprecated 17OHP Ser-mCnc17-HydroxyprogesteroneCHEM17-Hydroxyprogesterone, BloodMCnc

Frequently asked questions

Code details

Code1669-1
SystemLOINC
Display name17-Hydroxyprogesterone (S) [Mass/Vol]
Description17-Hydroxyprogesterone
Short nameDeprecated 17OHP Ser-mCnc
Component17-Hydroxyprogesterone
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.69

Consumer names

17-Hydroxyprogesterone, Blood

Part names

17-HydroxyprogesteroneMCncPtSerQnMass ConcentrationPoint in time (spot)Serum

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.

LOINC Code 1669-1 | HealthAssure