检测不到还是不能检测

A 65-year-old woman with a history of hypertension, coronary artery disease, osteoporosis, and gastroesophageal reflux disease was brought to the emergency department with altered mental status. Her son reported that she started to experience decreased appetite several weeks ago. She had been reporting epigastric pain for the past several months. The patient’s home medications include antihypertensives and over-the-counter medications for pain and heartburn. Her vital signs showed temperature, 37.3?C; blood pressure, 108/62 mm Hg; pulse rate, 96 beats/min; and oxygen saturation of 93% on room air. The patient is somnolent but arousable on examination. Her laboratory tests are significant for Na+, 144 mEq/L; K+, 3.4 mEq/L; Cl−, 92 mEq/L; HCO3−, 37 mEq/L, SUN, 28 mg/dL; and Scr, 2.7 mg/dL. Her serum calcium is 15.1 mEq/L; phosphorus, 3.0 mEq/L; and glucose, 130 mg/ dL. Albumin is 3.8 g/dL. Venous blood gas (VBG) shows a pH of 7.47. You are asked to evaluate the patient for the acidbase abnormalities, hypercalcemia, and kidney failure. Further workup on blood drawn on admission showed parathyroid hormone (PTH) level of 10 pg/mL; undetectable PTH-related peptide; 1,25-dihydroxyvitamin D, 20 pg/mL.

患者女，65岁，有高血压、冠状动脉疾病、骨质疏松、胃食管反流病史，因精神状态改变急诊。其儿子报告她几周前开始食欲下降，过去几个月上腹痛。患者的家庭用药包括抗高血压药和治疗疼痛和胃灼热的非处方药。生命体征显示：体温：37.3^oC、血压：108/62 mmHg、脉率：96次/min、血氧饱和度（吸室内空气）：93%。患者嗜睡，但检查时可唤醒。其实验室检查结果显著异常，Na ⁺ 144 mEq/L、K ⁺ 3.4 mEq/L、Cl^- 92 mEq/L、HCO₃^- 37 mEq/L、SUN 28 mg/dL、Scr 2.7 mg/dL、血清钙15.1 mEq/L、磷3.0 mEq/L、血糖130 mg/dL、白蛋白3.8 g/dL、静脉血气(VBG) pH值为7.47。要求您评价患者的酸碱异常、高钙血症和肾衰竭。入院时抽血进一步检查显示甲状旁腺激素(PTH)水平 10 pg/mL、PTH相关肽检测不到、1，25-二羟维生素D 20 pg/mL。

undetectable 检测不到还是不能检测？谢谢