4 testers as of April
Notes
- This test indicates if your vitamin D level >35 ng
- Amazon rarely ships health products outside of their country
- Amazons in Germany, India, and Canada do not stock it.
- I believe that over 1 million of these testers are been sold around the world
- As of April 2021 this test has still not been approved by the FDA for sale in the US
Instant vitamin D Yes-No test now available (2014)
Instructions made by VitaminDWiki for Test4D
- TWIST off the end of the pink/white lancet holder
- APPLY lancet hole to the side of a finger and PRESS the device against your finger
- Pressing with about a 1 lb force will activate the single-use lancet/needle)
- APPLY the pointy end of the pipette to the resulting blood
- (The blood will go into the pipette all by itself)
- PLACE pipette in the square hole and PRESS bulb to force the blood out
- PUT 7 drops of reagent chemical in the round hole,
- LOOK for red lines after WAITING for 10 minutes (shade of red does not matter)
- Two red lines = low vitamin D
- One red line = good level of vitamin D (> 35 ng)