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LOINC

LOINC Code 5948-5: aPTT.factor substitution immediately after addition of normal plasma Coag (PPP) [Time]

5948-5 is a LOINC code used to identify aPTT.factor substitution immediately after addition of normal plasma Coag (PPP) [Time] 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 Coagulation surface induced.factor substitution^immediately after addition of normal plasma. It is commonly used with the system or sample type PPP.

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 Coagulation surface induced.factor substitution^immediately after addition of normal plasma. It is commonly used with the system or sample type PPP.

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
  • Method: Coag

What it does not mean

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

Key facts

Deprecated Activated partial thrombplastin time (aPTT).factor substitution in Platelet poor plasma by Coagulation assay --immediately after addition of normal plasma
Coagulation surface induced.factor substitution^immediately after addition of normal plasma
Activated partial thromboplastin time; aPTT; aPTT correction study; Clot; Clottable; Coag; Coagulation assay; Control; Fac; Fact; Hematology; Heme; imm NP; Immediatedly after 11 addition of; Little(A)PTT; Mixing studies; Partial Thromboplastin Time; Plas; Platelet poor plasma; Point in time; PTT; QNT; Quan; Quant; Quantitative; Random; Surf; Tilt tube

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

aPTT.factor substitution immediately after addition of normal plasma Coag (PPP) [Time]Deprecated Activated partial thrombplastin time (aPTT).factor substitution in Platelet poor plasma by Coagulation assay --immediately after addition of normal plasmaDeprecated aPTT imm NP PPP QnCoagulation surface induced.factor substitution^immediately after addition of normal plasmaCOAGaPTT.factor substitution immediately after addition of Normal Plasma, BloodTime

Frequently asked questions

Code details

Code5948-5
SystemLOINC
Display nameaPTT.factor substitution immediately after addition of normal plasma Coag (PPP) [Time]
DescriptionCoagulation surface induced.factor substitution^immediately after addition of normal plasma
Short nameDeprecated aPTT imm NP PPP Qn
ComponentCoagulation surface induced.factor substitution^immediately after addition of normal plasma
PropertyTime
TimingPt
System (specimen)PPP
ScaleQn
MethodCoag
ClassCOAG
Example unitss
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0d
Last changed2.40

Consumer names

aPTT.factor substitution immediately after addition of Normal Plasma, Blood

Part names

Coagulation surface induced.factor substitution^immediately after addition of normal plasmaTimePtPPPQnCoagTime (e.g. seconds)Point in time (spot)Platelet poor plasmaCoagulation assay

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 5948-5 | HealthAssure