LOINC Code 81638-9: Clotting time Sukharev method (BldC)

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 Clotting time. It is commonly used with the system or sample type BldC.

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: Both
• Method: Sukharev

What it does not mean

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

Key facts

• Clotting time of Capillary blood by Sukharev method
• Clotting time
• The Sukharev clotting time uses capillary blood and a test tube called the Panchenkov's device that is manually tilted every 30 seconds until the blood clot has formed. The tube has a diameter of 1mm and the reference range is 2-5 minutes. In contrast, the Lee White method, which is also manual, uses a tube with a diameter of 8-10mm, which results in a larger volume of blood and longer testing time with a reference range of 5-10 minutes.
• Blood - capillary; Cap bld; Cap blood; Capillary bld; Capillary blood; Clot; Clot tm; Clottable; COAGULATION; Coagulation time; Finger stick; Hematology; Heme; Point in time; QNT; Quan; Quant; Quantitative; Random; Rate; R-time

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