diff --git a/tests/thresholds_rwh.test.js b/tests/thresholds_rwh.test.js
new file mode 100644
index 0000000..e761a37
--- /dev/null
+++ b/tests/thresholds_rwh.test.js
@@ -0,0 +1,317 @@
+/*
+	Neonatal jaundice treatment threshold calculator
+	Copyright (C) 2024-2025  Lee Yingtong Li
+	
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+	
+	You should have received a copy of the GNU Affero General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// Import bilirubin_lib.js
+const fs = require('fs');
+eval(fs.readFileSync('src/bilirubin_lib.js').toString());
+
+const assert = require('node:assert');
+const { suite, test } = require('node:test');
+
+function unitsEqual(a, b) {
+	return Math.round(a) === b;
+}
+
+function tenthsEqual(a, b) {
+	return Math.round(a * 10) === b * 10;
+}
+
+suite('RWH phototherapy thresholds', () => {
+	test('Phototherapy thresholds at >= 38 weeks', () => {
+		for (let gestation = 42; gestation >= 38; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false, false, false, false, false), 135));
+			assert(unitsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 143));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 233));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 280));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 325));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 327));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 354));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 360));
+		}
+	});
+	
+	test('Phototherapy thresholds at >= 38 weeks with risk factors', () => {
+		// Check that any combination of risk factors invokes the 35-37 week chart
+		for (let gestation = 42; gestation >= 38; gestation--) {
+			for (let i = 1; i <= 0b1111; i++) {
+				let flag1 = (i & 1) === 1;
+				let flag2 = ((i >> 1) & 1) === 1;
+				let flag3 = ((i >> 2) & 1) === 1;
+				let flag4 = ((i >> 3) & 1) === 1;
+				
+				// Test cases
+				assert(unitsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, flag1, flag2, false /* bw_lt1000 */, flag3, flag4), 108));
+				assert(unitsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, flag1, flag2, false, flag3, flag4), 115));
+				assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, flag1, flag2, false, flag3, flag4), 198));
+				assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, flag1, flag2, false, flag3, flag4), 234));
+				assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, flag1, flag2, false, flag3, flag4), 275));
+				assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, flag1, flag2, false, flag3, flag4), 277));
+				assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, flag1, flag2, false, flag3, flag4), 290));
+				assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, flag1, flag2, false, flag3, flag4), 290));
+			}
+		}
+	});
+	
+	test('Phototherapy thresholds at 35-37 weeks', () => {
+		for (let gestation = 37; gestation >= 35; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false, false, false, false, false), 108));
+			assert(unitsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 115));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 198));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 234));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 275));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 277));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 290));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 290));
+		}
+	});
+	
+	test('Phototherapy thresholds at 33-34 weeks', () => {
+		for (let gestation = 34; gestation >= 33; gestation--) {
+			// Test cases (DAT positive)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, true /* dat */, false, false, false, false), 95.3));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, true, false, false, false, false), 99.9));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, true, false, false, false, false), 168));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, true, false, false, false, false), 199));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, true, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, true, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, true, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, true, false, false, false, false), 220));
+			
+			// Test cases (DAT negative)
+			assert(unitsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false /* dat */, false, false, false, false), 115));
+			assert(unitsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 120));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 188));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 219));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 240));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 240));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 240));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 240));
+		}
+	});
+	
+	test('Phototherapy thresholds at 31-32 weeks', () => {
+		for (let gestation = 32; gestation >= 31; gestation--) {
+			// Test cases (DAT positive)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, true /* dat */, false, false, false, false), 85.3));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, true, false, false, false, false), 89.9));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, true, false, false, false, false), 154));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, true, false, false, false, false), 184));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, true, false, false, false, false), 200));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, true, false, false, false, false), 200));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, true, false, false, false, false), 200));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, true, false, false, false, false), 200));
+			
+			// Test cases (DAT negative)
+			assert(unitsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false /* dat */, false, false, false, false), 105));
+			assert(unitsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 110));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 174));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 204));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 220));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 220));
+		}
+	});
+	
+	test('Phototherapy thresholds at 27-30 weeks', () => {
+		for (let gestation = 30; gestation >= 27; gestation--) {
+			// Test cases (DAT positive)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, true /* dat */, false, false, false, false), 75.3));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, true, false, false, false, false), 79.9));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, true, false, false, false, false), 139));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, true, false, false, false, false), 161));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, true, false, false, false, false), 170));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, true, false, false, false, false), 170));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, true, false, false, false, false), 170));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, true, false, false, false, false), 170));
+			
+			// Test cases (DAT negative)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false /* dat */, false, false, false, false), 95.3));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 99.9));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 159));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 181));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 190));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 190));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 190));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 190));
+		}
+	});
+	
+	test('Phototherapy thresholds at < 27 weeks', () => {
+		for (let gestation = 26; gestation >= 0; gestation--) {
+			// Test cases (DAT positive)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, true /* dat */, false, false, false, false), 65.1));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, true, false, false, false, false), 66.6));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, true, false, false, false, false), 104));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, true, false, false, false, false), 123));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, true, false, false, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, true, false, false, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, true, false, false, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, true, false, false, false, false), 130));
+			
+			// Test cases (DAT negative)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false /* dat */, false, false, false, false), 85.1));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, false, false, false), 86.6));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, false, false, false), 124));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, false, false, false), 143));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, false, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, false, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, false, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, false, false, false), 150));
+		}
+	});
+	
+	test('Phototherapy thresholds at < 35 weeks with birth weight < 1000 g', () => {
+		for (let gestation = 34; gestation >= 0; gestation--) {
+			// Test cases (DAT positive)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, true /* dat */, false, true /* bw_lt1000 */, false, false), 65.1));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, true, false, true, false, false), 66.6));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, true, false, true, false, false), 104));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, true, false, true, false, false), 123));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, true, false, true, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, true, false, true, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, true, false, true, false, false), 130));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, true, false, true, false, false), 130));
+			
+			// Test cases (DAT negative)
+			assert(tenthsEqual(rwh_phototherapy_thresh((6+6/60)/24, gestation, false /* dat */, false, true, false, false), 85.1));
+			assert(tenthsEqual(rwh_phototherapy_thresh((7+58/60)/24, gestation, false, false, true, false, false), 86.6));
+			assert(unitsEqual(rwh_phototherapy_thresh((35+11/60)/24, gestation, false, false, true, false, false), 124));
+			assert(unitsEqual(rwh_phototherapy_thresh((55+21/60)/24, gestation, false, false, true, false, false), 143));
+			assert(unitsEqual(rwh_phototherapy_thresh((84+11/60)/24, gestation, false, false, true, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((85+29/60)/24, gestation, false, false, true, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((113+11/60)/24, gestation, false, false, true, false, false), 150));
+			assert(unitsEqual(rwh_phototherapy_thresh((137+31/60)/24, gestation, false, false, true, false, false), 150));
+		}
+	});
+	
+	test('Phototherapy thresholds at < 35 weeks are parallel', () => {
+		// Check that DAT-positive and DAT-negative phototherapy thresholds are parallel
+		for (let chartName of ['33-34', '31-32', '27-30', 'lt27']) {
+			let chart = RWH_CURVE_DATA[chartName];
+			assert(chart['phototherapy_datneg'].length === chart['phototherapy_datpos'].length);
+			
+			for (let i = 0; i < chart['phototherapy_datneg'].length; i++) {
+				assert(chart['phototherapy_datneg'][i][0] === chart['phototherapy_datpos'][i][0]);
+				assert(chart['phototherapy_datneg'][i][1] === chart['phototherapy_datpos'][i][1] + 20);
+			}
+		}
+	});
+});
+
+suite('RWH exchange transfusion thresholds', () => {
+	test('Exchange transfusion thresholds at >= 38 weeks', () => {
+		for (let gestation = 42; gestation >= 38; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 283));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 287));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 348));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 384));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 420));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 421));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 432));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 435));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at 35-37 weeks', () => {
+		for (let gestation = 37; gestation >= 35; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 248));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 252));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 299));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 334));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 375));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 376));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 385));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 385));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at 33-34 weeks', () => {
+		for (let gestation = 34; gestation >= 33; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 225));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 230));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 293));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 324));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 340));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 340));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 340));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 340));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at 31-32 weeks', () => {
+		for (let gestation = 32; gestation >= 31; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 208));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 213));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 274));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 304));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 320));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 320));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 320));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 320));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at 27-30 weeks', () => {
+		for (let gestation = 30; gestation >= 27; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 185));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 190));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 249));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 276));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 290));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 290));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 290));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 290));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at < 27 weeks', () => {
+		for (let gestation = 26; gestation >= 0; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, false, false, false), 165));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, false, false, false), 170));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, false, false, false), 219));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, false, false, false), 241));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, false, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, false, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, false, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, false, false, false), 250));
+		}
+	});
+	
+	test('Exchange transfusion thresholds at < 35 weeks with birth weight < 1000 g', () => {
+		for (let gestation = 34; gestation >= 0; gestation--) {
+			// Test cases
+			assert(unitsEqual(rwh_exchange_thresh((6+6/60)/24, gestation, false, false, true /* bw_lt1000 */, false, false), 165));
+			assert(unitsEqual(rwh_exchange_thresh((7+58/60)/24, gestation, false, false, true, false, false), 170));
+			assert(unitsEqual(rwh_exchange_thresh((35+11/60)/24, gestation, false, false, true, false, false), 219));
+			assert(unitsEqual(rwh_exchange_thresh((55+21/60)/24, gestation, false, false, true, false, false), 241));
+			assert(unitsEqual(rwh_exchange_thresh((84+11/60)/24, gestation, false, false, true, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((85+29/60)/24, gestation, false, false, true, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((113+11/60)/24, gestation, false, false, true, false, false), 250));
+			assert(unitsEqual(rwh_exchange_thresh((137+31/60)/24, gestation, false, false, true, false, false), 250));
+		}
+	});
+});