Subscriber Login   Users   Administrators
Integrated cloud-based solutions for clinical laboratories

Sample Page

The page below is a sample from the MediaLab course, Dermal Puncture and Capillary Blood Collection.

Learn about Compliance & CE courses available for clinical laboratories and individual medical technologists.

Order of Draw

The order of draw for a capillary blood collection is slightly different than the order of draw for a venous blood collection.

If capillary blood gases are ordered, they are drawn first to avoid introduction of room air as much as possible.

A specimen for blood count is collected before tubes containing other anticoagulants and additives. This is to ensure that the blood will not begin to clot before this specimen is collected; clots will affect the accuracy of the blood count.

The following order of draw is commonly used:

Container

Additive

Use

Lavender topEDTAFor hematology blood counts
Green top Lithium heparinTests that require a heparinized plasma sample

__

Other tubes containing anticoagulants

Varied

Red or gold topClot activatorTests that require a serum sample
Red top

No additive

Tests that require a serum sample but clot activator and/or gel may affect test

 

 

MediaLab, Inc.

http://www.MediaLabInc.net    |    (877) 776-8460 (tollfree)    |    sales@medialabinc.net