According to the official policy document a six game suspension is not related to any masking or dilution. It is the result of a "Positive Test Result for Anabolic Agent".

Players who violate the Policy will be subject to discipline by the Commissioner as outlined below.

Step One: The first time a Player violates this Policy by testing positive for a Prohibited Substance; attempting to substitute, dilute or adulterate a specimen; or manipulating a test result, he will be suspended without pay pursuant to the following schedule:

Positive Test Result for Stimulant, Diuretic or Masking Agent -- two regular and/or postseason games.

Positive Test Result for Anabolic Agent -- six regular and/or postseason games.

Positive Test Result for Prohibited Substance plus Diuretic or Masking Agent/Attempt to Substitute, Dilute or Adulterate Specimen/Attempt to Manipulate Test Result/Violation of Section 5 -- eight regular and/or postseason games