Everything about Laboratory

In Clash of Clans, Laboratory is one of the most secret place that no one want visit. You shouldn’t too. All we know about it is the Alchemists of this Laboratory had a lot of secret and powerful receipt which make our troops be much faster and stronger.

Everything about Laboratory in Clash of Clans

Clash of Clans Laboratory Summary

  • The Laboratory is the only one place in Clash of Clans which can help you upgrade your Troops and Spells. You can unlock it from Town Hall 3.
  • The Laboratory requires Elixir and Dark Elixir for researching.
  • If you upgrade your Laboratory while it is doing a research, the research will still keep going.
  • Once you research anything in Laboratory, you can’t cancel it. You have to wait until the research is complete to upgrade another one.
  • While doing research, the Laboratory emits a purple light at level 1-6, blue light at level 7 and red light at level 8.
  • You don’t have to use Builder if you want to do a research.

Laboratory Levels

Basic but important:

  • You need to unlock a troop/spell first If you want to upgrade it.
  • You can’t upgrade your Heroes via Laboratory.
  • The top of the level 7 Laboratory looks like from level 7 Hidden Tesla.
  • Level 7 Laboratory has 2 tubes which had Dark Elixir inside.
  • There are only two buildings in Clash of Clans that can be upgraded at every level from TH3-10, they are Mortar and Laboratory.

Two tables below will show you everything about researching in Laboratory. Because the Elixir table is too big so I post it here as an image. You can save it via right-click If It is too small for you to see. You can also download the PDF version of the Elixir table at here.

Clash of Clans Laboratory Researches

Elixir Upgrades in Clash of Clans

Dark Elixir Researches Laboratory Level
Level 5 Level 6 Level 7 Level 8
Minion Level 2 4-Mar 5 6
Cost 10,000 20,000 / 30,000 40,000 100,000
Time 5 days 6 days / 7 days 10 days 14 days
Hog Rider Level 2 4-Mar 5
Cost 20,000 30,000 / 40,000 50,000
Time 8 days 10 days / 12 days 14 days
Valkyrie Level 2 4-Mar
Cost 50,000 60,000 / 70,000
Time 10 days 12 days / 14 days
Golem Level 2 4-Mar 5
Cost 60,000 70,000 / 80,000 90,000
Time 10 days 12 days / 14 days 14 days
Witch Level 2
Cost 75,000
Time 10 days
Lava Hound Level 2 3
Cost 60,000 70,000
Time 10 days 12 days

I hope you can find everything you need in this Laboratory guide. If you have any question, just ask!


  1. Base on my experience if you upgrade lab while it researching, the reseach will keep going. There’s a bug when the upgrade finnish, maybe all you need is re open COC and the reseach time back normal again (in my case, I just go do some raid). For example based on my experience: I research lv 5 barbarian which is spent 5 days to upgrade, and I immediately upgrade my lab to lv 7 (th9) which is spent 5 days too. And then when my lab is finish upgrade, it shows my barbarian research still remaining more than 3d. At first I was shocked and feel hopeless, until I decide to do some raid and back to my base. Guess what? my lv 5 barbarian research is done. I think it’s glitch. But trust me, all of my clan mate do research while upgrade their lab. and the research still on going.

  2. Here’s my result for wasting time:

    Total duration research
    Elix troops = 301 days 6 hours
    Elix speels = 107 days
    Dark troops = 204 days
    Dark speels = 78 days

    TOTAL = 690 days and 6 hours

    2 years = 730 days – 1 month (30 days) = 700 days

    So, if you nonstop research your lab, it will need 1 years, 10 month, 20 days and 6 hours.

    Am I doing it right? CMIIW

    I’m too lazy to calculating the cost, because for me searching loot for upgrade isn’t that hard.

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