Do the low urine protein and low protein‑creatinine ratio suggest preeclampsia?

These Values Do NOT Suggest Preeclampsia

Based on your reported values, the protein-to-creatinine ratio of 0.077 (77 mg/mmol) is well below the diagnostic threshold for significant proteinuria in preeclampsia, which is ≥30 mg/mmol (0.3 mg/mg). 1

Understanding Your Results

Your urine protein-to-creatinine ratio of 0.077 (or 77 mg/mmol if we interpret the "77" as the actual ratio value) falls into one of two scenarios:

If the ratio is truly 0.077 mg/mg:

• This converts to approximately 7.7 mg/mmol
• This is far below the threshold of 30 mg/mmol needed for significant proteinuria
• This essentially rules out proteinuria as a component of preeclampsia 1

If the ratio is 77 mg/mmol:

• This is above the 30 mg/mmol threshold for significant proteinuria
• However, this alone does NOT diagnose preeclampsia

Critical Point About Preeclampsia Diagnosis

Proteinuria is NOT required to diagnose preeclampsia—it is present in only approximately 75% of cases. 1

Preeclampsia requires:

• Gestational hypertension (BP ≥140/90 mmHg after 20 weeks gestation)
• PLUS one or more of the following:
  • Proteinuria (PCR ≥30 mg/mmol)
  • Other maternal organ dysfunction (elevated liver enzymes, low platelets, renal insufficiency, pulmonary edema)
  • Neurological symptoms (severe headache, visual disturbances)
  • Uteroplacental dysfunction (fetal growth restriction) 1

What You Need to Know

1. Blood pressure is essential: Without documented hypertension (≥140/90 mmHg developing after 20 weeks), preeclampsia cannot be diagnosed regardless of proteinuria levels 1, 2

2. Low proteinuria alone means nothing: If your protein-creatinine ratio is truly low (0.077), this argues against preeclampsia but does not exclude it, since 25% of preeclampsia cases have no proteinuria 1

3. Complete assessment needed: Check for:

   • Blood pressure measurements
   • Platelet count and liver enzymes
   • Symptoms: severe headache, visual changes, right upper quadrant pain
   • Fetal growth assessment 1

Common Pitfall to Avoid

Do not assume that low or absent proteinuria excludes preeclampsia. Modern diagnostic criteria recognize that preeclampsia can present with hypertension plus organ dysfunction without proteinuria. 1 If you have new-onset hypertension after 20 weeks with any concerning symptoms or laboratory abnormalities, you need immediate evaluation regardless of urine protein levels.