Question 6

Increased bleeding time

Patients taking warfarin should be anticipated to have an increased bleeding time due to the anticoagulant effects of the medication, which inhibits blood clotting.

A) Fasting requirement

There is no direct relationship between warfarin and fasting requirements. Fasting is generally not necessary for patients on warfarin unless specified for a particular test, making this option incorrect in the context of the question.

B) Alternate antiseptic required

While certain antiseptics may be preferred in specific situations, there is no indication that a phlebotomist would need to use an alternate antiseptic specifically for patients on warfarin. This option does not address the primary concern related to the effects of the medication.

C) Increased bleeding time

This option is correct because warfarin is an anticoagulant that prolongs the time it takes for blood to clot, leading to increased bleeding time. Phlebotomists must be particularly cautious when performing venipuncture on patients taking warfarin to minimize the risk of excessive bleeding.

D) Specimen placed on ice

Placing a specimen on ice is typically not a standard requirement for patients on warfarin. This procedure is more relevant for tests that require temperature control, such as certain hormone levels or metabolic panels, making this option incorrect.

Conclusion

The correct answer is "Increased bleeding time" as it directly correlates with the anticoagulant properties of warfarin, significantly affecting the patient’s bleeding risk during blood draws. All other options do not address the specific considerations a phlebotomist must take into account when dealing with a patient on warfarin, making them unsuitable in this context.