The Claim

In human HAP1 cells, creatine uptake occurs via two distinct mechanisms: a high-affinity, saturable process mediated by the creatine transporter CrT (SLC6A8) with a Km of 9–10 μM, and a low-affinity, unsaturable process that is independent of CrT and functions at higher extracellular creatine concentrations.

Source: Evidence of an intracellular creatine-sensing mechanism that modulates creatine biosynthesis via AGAT expression in human HAP1 cells

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
4score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Creatine gets into human cells in two ways: one is like a precise lock-and-key system that works well at low levels, and the other is a more general process that kicks in when there's a lot of creatine around.

See the scientific wording

Creatine uptake in human HAP1 cells occurs through two distinct mechanisms: a high-affinity, saturable process mediated by the creatine transporter CrT (SLC6A8) with a Km of 9–10 μM, and a low-affinity, unsaturable CrT-independent process that operates at higher extracellular concentrations.

What the research says

1 study
  1. Study: Evidence of an intracellular creatine-sensing mechanism that modulates creatine biosynthesis via AGAT expression in human HAP1 cells

    The study shows that creatine enters HAP1 cells in two ways: one that works well at low levels and gets full quickly, and another that works at high levels even without the main transporter. This matches the claim exactly.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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