Significant Dehydration

Rhonex’s hydration status can be interpreted while applying reference to Casa DJ, Armstrong LE, Hillman SK, et al. National Athletic Trainers' Association Position, see the table below:

The flagged samples with high HGB concentrations are Samples 2, 15, 16 and 22. 

For Sample 2, the urine specific gravity (USG) is 1.015, for Sample 15 the USG is 1.021, for Sample 16 the USG is 1.023 and for Sample 22 the USG is 1.010. However, the urine Sample 22 was collected several hours after collection of blood sample; although it was not possible to reconstruct the scenario with certainty, it is not unlikely that Rhonex had to drink a significant volume of fluid in order to be able to produce a urine sample causing a time gap of several hours between the collection of both samples. Everything stated above confirms that when these Rhonex’s flagged samples were collected he was significantly dehydrated.

The USG values can be summarized as follows:

i) 2019 - not a single USG value of exactly or over 1.021

ii) 2020 - 5 samples of 1.021+ and 2 under 1.021

iii) 2021 - all samples under 1.021+

iv) 2022 - all out of competition samples under 1.021+


Rhonex’s hydration status can be further interpreted while applying reference to Coffman KE, Mitchell KM, Salgado RM, Miller GD, Kenefick RW, Cheuvront SN. Potential for dehydration to impact the athlete biological passport. Drug Test Anal. 2020; 12: 1206-11.

I hope that in time my medical diagnosis will be clear both for myself and for this case. I don't cheat or dope! The truth is on my side. This is all I can say.

Rhonex Kipruto

22 April 2024

Help Rhonex Run


Rhonex Kipruto is opening up about his struggles with alcohol and the complexities of his ongoing Athlete Biological Passport (ABP) case, aiming to increase transparency and advocate for reforms in anti-doping policies.

Ikaika Sports (Rhonex's sports management and sports marketing agency) issued a lengthy press release on 17 May 2023 in relation to this matter.

Rhonex seeks to inform public in detail and without hesitation on what this ABP matter is all about. Rhonex has nothing to hide.

Motivate World Athletics; Athletics Integrity Unit; leading World Athletics Label Road Races; World Federation of Sporting Goods Industry (WFSGI); sports media; and the general public to make efforts to understand the complexity of ABP cases and, potentially, to motivate key stakeholders to work on reform around ABP matters. These cases are often very complex, extremely costly and due to lack of available experts they do present a huge barrier to overcome for athletes. 

Fund-raise, as he is in grave need of support as it relates to his huge medical and legal bills.


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