Final answer:
None of the options provided are true regarding albumin colloid.
Step-by-step explanation:
Albumin colloid is often used for liver imaging in medical procedures. In regards to the given options:
- Albumin colloid is generally more expensive than sulfur colloid, so (a) is false.
- The particle size of albumin colloid is actually larger than sulfur colloid, so (b) is false.
- A higher dose is actually required for liver imaging using albumin colloid, so (c) is false.
- Albumin colloid does not need to be boiled during preparation, so (d) is false.
Therefore, none of the options provided are true regarding albumin colloid.