At the bend of the loop of Henle,the osmolarity of the tubular fluid is more than four times greater than that of the glomerular filtrate when a person is in an antidiuretic state.

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This statement is true. The loop of Henle is responsible for creating a concentration gradient in the kidney, and at the bend of the loop (the bottom of the descending limb), the osmolarity can reach over 1200 mOsm/L in an antidiuretic state, whereas the glomerular filtrate typically has an osmolarity of around 300 mOsm/L. This concentration gradient is essential for the kidney's ability to concentrate urine and conserve water.

At the Bend of the Loop of Henle,the Osmolarity of the Tubular