One Drop of Coombs' Control Cells Was Added to a Negative

question 47

Multiple Choice

One drop of Coombs' control cells was added to a negative antibody screen. No agglutination was observed after centrifugation. What course of action is taken?

• A) Report negative result
• B) Report inconclusive result
• C) Repeat the test
• D) Add one more drop of check cells and re-centrifuge

---

Definitions:

Parkinson's Disease

A progressive nervous system disorder that affects movement, causing symptoms like tremors, stiffness, and slowing of movement.

Brain Cells

Cells that constitute the brain, including neurons, which are responsible for transmitting signals, and glial cells, which provide support and protection for neurons.

Parkinson's Disease

A neurodegenerative disorder that affects movement, often including tremors, stiffness, and difficulty with balance and coordination.

Dementia

A broad category of brain diseases that cause a long-term and often gradual decrease in the ability to think and remember.