LOINCActiveObservation

LOINC Code 16630-6: Coagulation aPTT saline 1:1 (Bld control) [Time]

16630-6 is a LOINC code used to identify Coagulation aPTT saline 1:1 (Bld control) [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. It is commonly used with the system or sample type Bld^Control.

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. It is commonly used with the system or sample type Bld^Control.

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
  • Method: Coag.surface induced.saline 1:1

What it does not mean

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

Key facts

aPTT saline 11 in Blood from Control by Coagulation assay
Coagulation
aPTT; aPTT saline 11; Blood; Clot; Clottable; Coag; Coagulation assay; Contrl; Hematology; Heme; i; Normal; Point in time; QNT; Quan; Quant; Quantitative; Random; Surf; Tilt tube; WB; Whole blood

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

Coagulation aPTT saline 1:1 (Bld control) [Time]aPTT saline 1:1 in Blood from Control by Coagulation assayaPTT saline 1:1 Bld ContCoagulationCOAGCoagulation, control BloodTime

Frequently asked questions

Code details

Code16630-6
SystemLOINC
Display nameCoagulation aPTT saline 1:1 (Bld control) [Time]
DescriptionCoagulation
Short nameaPTT saline 1:1 Bld Cont
ComponentCoagulation
PropertyTime
TimingPt
System (specimen)Bld^Control
ScaleQn
MethodCoag.surface induced.saline 1:1
ClassCOAG
Example unitss
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Coagulation, control Blood

Part names

CoagulationTimePtBld^controlQnCoag.surface induced.saline 1:1Time (e.g. seconds)Point in time (spot)Blood^ControlaPTT saline 1:1

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 16630-6 | HealthAssure