What does FLS stand for in terms of a blood test?

The deletion or addition of one or more nucleotides in a strand of DNA produces? Starvation causes the plasma protein levels in the blood plasme to fall how would that affect the formation of tissue fluid in the tissue spaces? The final product of carbohydrate digestion is? Is paced and paste minimal pairs? Is there a tree called plane? How many ATP is used in a sodium potassium pump? Why does the letter e appear under the microscope? What are normal circumstances where your bodies need to make more cells? Plants that have two critical photoperiods are called what? What observation of species distribution across earth support the theory of common descent? What was Secretariat's top speed in mph? What are the two environments of a plant? Simple food made by photosynthesis? Is a butterfly masculine or feminine? Cell is placed in a solution If the cell is observed to shrink the solution must be relative to the interior of the cell? How do crossover events during meiosis benefit organisms? What two body systems are used when sneezing? Is a way of selecting individuals from a group? When the osmotic pressure is the same on both side's of a semipermeable membrane each solution is said to be? Meaning of brown butterflies with white spots?

What does FLS stand for in terms of a blood test?