Question

How should evacuated tubes be stored in the lab?

A. In a freezer
B. In direct sunlight
C. At room temperature
D. In a refrigerator

Answer 1

C. At room temperature. Evacuated tubes should be stored at room temperature in the lab. When long-term preservation is needed,

Step-by-step explanation:

The correct way to store evacuated tubes in a laboratory is at room temperature, unless specific instructions require otherwise. General lab specimens are not usually stored in freezers, direct sunlight, or refrigerators by default, but rather under controlled room temperature conditions to avoid any potential alterations or damage to the samples contained within them.

In cases where the biological material is sensitive and requires long-term preservation, such as bacterial cultures or medical specimens, ultra-low temperatures are used. For example, ultra-low freezers can maintain temperatures below -70 °C, and liquid nitrogen tanks can preserve specimens at temperatures below -196 °C, ensuring the integrity of the samples for extended periods (Figure 13.10).