(In Russ.)
It is shallow, so the needle only travels a short distance, and it has fewer pain-sensitive nerves than deeper tissue, so most people feel a small pinch rather than a deep ache
From advanced multimode luminescence, fluorescence, absorbance, BRET and FRET capabilities to dedicated microplate or single-tube luminometers, there is a GloMax system for every lab and throughput need

Symptoms associated with low magnesium or selenium The following have been associated with low mineral levels and may be worth investigating: Muscle cramps or twitching Persistent fatigue that does not resolve with sleep Irregular heartbeat or palpitations Poor sleep or difficulty staying asleep Anxiety or mood symptoms Symptoms of high stress, which depletes magnesium rapidly Thyroid-related symptoms such as sluggishness or cold intolerance Frequent infections or a slow immune response Who benefits from testing You have muscle cramps, poor sleep, anxiety, or an irregular heartbeat You have thyroid issues or a family history of thyroid disease You're under chronic stress , which depletes magnesium rapidly You want to verify your mineral intake is actually sufficient rather than assuming You supplement magnesium or selenium and want to confirm you're in an effective range You're an athlete or active person dealing with cramps, poor recovery, or disrupted sleep You have a GI condition affecting absorption (Crohn's, celiac, IBS) Your standard magnesium test came back "normal" but symptoms persist How to prepare Stop magnesium and selenium supplements at least 7 days before your draw

Do not use with other NSAIDs or corticosteroids