LOINC Code 55459-2: Prekallikrein (Fletcher Factor) (PPP)

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 Prekallikrein. 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
• Order vs observation: Order

What it does not mean

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

Key facts

• Deprecated Prekallikrein (Fletcher Factor) in Platelet poor plasma
• Prekallikrein
• Created ONLY for ORDERING in response to request from Canada Health Infoway- a national standardization effort. The dashes in this case mean that the ordering provider does not care what property or scale is used in the observation performed in response to this order. LOINC is still pondering details about how this kind of item should be represented. So the representation might change in the future, but the term will still have the same usage and meaning.
• Fletcher factor; Lab orders; LimitedUseLabOrders; PK; Plas; Platelet poor plasma; Point in time; Prokallikrein; Prokinogenase; Random

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

Frequently asked questions